rdar://23087563: iOS 9.0.2: changing the keyboard-layout to "Emoji" shows autolayout-warnings on the console

iOS 9.0.2: changing the keyboard-layout to "Emoji" shows autolayout-warnings on the console

Originator:	raise.rescue
Number:	rdar://23087563	Date Originated:	13-Oct-2015 02:23 PM
Status:	Open	Resolved:
Product:	iOS	Product Version:	9.0.2
Classification:	UI/Usability	Reproducible:	Sometimes
 
Summary:
Changing the layout of the keyboard to “Emoji”, the following warnings are thrown:

2015-10-13 14:18:13.829 KeyboardThrowsAutolayoutWarnings[399:167360] Unable to simultaneously satisfy constraints.
	Probably at least one of the constraints in the following list is one you don't want. Try this: (1) look at each constraint and try to figure out which you don't expect; (2) find the code that added the unwanted constraint or constraints and fix it. (Note: If you're seeing NSAutoresizingMaskLayoutConstraints that you don't understand, refer to the documentation for the UIView property translatesAutoresizingMaskIntoConstraints) 
(
    "<NSAutoresizingMaskLayoutConstraint:0x1609c620 h=--& v=--& V:[UIKeyboardAssistantBar:0x14e931d0(0)]>",
    "<NSLayoutConstraint:0x14d89750 V:|-(0)-[_UIButtonBarStackView:0x14e93820]   (Names: '|':UIKeyboardAssistantBar:0x14e931d0 )>",
    "<NSLayoutConstraint:0x14d89780 V:[_UIButtonBarStackView:0x14e93820]-(0)-|   (Names: '|':UIKeyboardAssistantBar:0x14e931d0 )>",
    "<NSLayoutConstraint:0x14d61810 'UIButtonBar.maximumAlignmentSize' _UIButtonBarButton:0x14d62680.height == UILayoutGuide:0x14eb8d40'UIViewLayoutMarginsGuide'.height>",
    "<NSLayoutConstraint:0x14e9e1d0 'UIView-bottomMargin-guide-constraint' V:[UILayoutGuide:0x14eb8d40'UIViewLayoutMarginsGuide']-(3)-|   (Names: '|':_UIButtonBarStackView:0x14e93820 )>",
    "<NSLayoutConstraint:0x14eb23c0 'UIView-topMargin-guide-constraint' V:|-(10)-[UILayoutGuide:0x14eb8d40'UIViewLayoutMarginsGuide']   (Names: '|':_UIButtonBarStackView:0x14e93820 )>"
)

Will attempt to recover by breaking constraint 
<NSLayoutConstraint:0x14e9e1d0 'UIView-bottomMargin-guide-constraint' V:[UILayoutGuide:0x14eb8d40'UIViewLayoutMarginsGuide']-(3)-|   (Names: '|':_UIButtonBarStackView:0x14e93820 )>

Make a symbolic breakpoint at UIViewAlertForUnsatisfiableConstraints to catch this in the debugger.
The methods in the UIConstraintBasedLayoutDebugging category on UIView listed in <UIKit/UIView.h> may also be helpful.
2015-10-13 14:18:13.833 KeyboardThrowsAutolayoutWarnings[399:167360] Unable to simultaneously satisfy constraints.
	Probably at least one of the constraints in the following list is one you don't want. Try this: (1) look at each constraint and try to figure out which you don't expect; (2) find the code that added the unwanted constraint or constraints and fix it. (Note: If you're seeing NSAutoresizingMaskLayoutConstraints that you don't understand, refer to the documentation for the UIView property translatesAutoresizingMaskIntoConstraints) 
(
    "<NSAutoresizingMaskLayoutConstraint:0x1609c620 h=--& v=--& V:[UIKeyboardAssistantBar:0x14e931d0(0)]>",
    "<NSLayoutConstraint:0x14d878e0 V:|-(0)-[_UIButtonBarStackView:0x14d8a360]   (Names: '|':UIKeyboardAssistantBar:0x14e931d0 )>",
    "<NSLayoutConstraint:0x14d87910 V:[_UIButtonBarStackView:0x14d8a360]-(0)-|   (Names: '|':UIKeyboardAssistantBar:0x14e931d0 )>",
    "<NSLayoutConstraint:0x14d55c20 'UISV-canvas-connection' UILayoutGuide:0x14e8c470'UIViewLayoutMarginsGuide'.top == _UILayoutSpacer:0x14d55cf0'UISV-alignment-spanner'.top>",
    "<NSLayoutConstraint:0x14d55b30 'UISV-canvas-connection' UILayoutGuide:0x14e8c470'UIViewLayoutMarginsGuide'.bottom == _UILayoutSpacer:0x14d55cf0'UISV-alignment-spanner'.bottom>",
    "<NSLayoutConstraint:0x14e8fbd0 'UIView-bottomMargin-guide-constraint' V:[UILayoutGuide:0x14e8c470'UIViewLayoutMarginsGuide']-(3)-|   (Names: '|':_UIButtonBarStackView:0x14d8a360 )>",
    "<NSLayoutConstraint:0x14eb81e0 'UIView-topMargin-guide-constraint' V:|-(10)-[UILayoutGuide:0x14e8c470'UIViewLayoutMarginsGuide']   (Names: '|':_UIButtonBarStackView:0x14d8a360 )>"
)

Will attempt to recover by breaking constraint 
<NSLayoutConstraint:0x14d55b30 'UISV-canvas-connection' UILayoutGuide:0x14e8c470'UIViewLayoutMarginsGuide'.bottom == _UILayoutSpacer:0x14d55cf0'UISV-alignment-spanner'.bottom>

Make a symbolic breakpoint at UIViewAlertForUnsatisfiableConstraints to catch this in the debugger.
The methods in the UIConstraintBasedLayoutDebugging category on UIView listed in <UIKit/UIView.h> may also be helpful.
2015-10-13 14:18:13.836 KeyboardThrowsAutolayoutWarnings[399:167360] Unable to simultaneously satisfy constraints.
	Probably at least one of the constraints in the following list is one you don't want. Try this: (1) look at each constraint and try to figure out which you don't expect; (2) find the code that added the unwanted constraint or constraints and fix it. (Note: If you're seeing NSAutoresizingMaskLayoutConstraints that you don't understand, refer to the documentation for the UIView property translatesAutoresizingMaskIntoConstraints) 
(
    "<NSAutoresizingMaskLayoutConstraint:0x1609c620 h=--& v=--& V:[UIKeyboardAssistantBar:0x14e931d0(0)]>",
    "<NSLayoutConstraint:0x14d874c0 V:|-(0)-[_UIButtonBarStackView:0x14dd1c30]   (Names: '|':UIKeyboardAssistantBar:0x14e931d0 )>",
    "<NSLayoutConstraint:0x14d878b0 V:[_UIButtonBarStackView:0x14dd1c30]-(0)-|   (Names: '|':UIKeyboardAssistantBar:0x14e931d0 )>",
    "<NSLayoutConstraint:0x14e947d0 'UIView-bottomMargin-guide-constraint' V:[UILayoutGuide:0x14e84b20'UIViewLayoutMarginsGuide']-(3)-|   (Names: '|':_UIButtonBarStackView:0x14dd1c30 )>",
    "<NSLayoutConstraint:0x14e93b50 'UIView-topMargin-guide-constraint' V:|-(10)-[UILayoutGuide:0x14e84b20'UIViewLayoutMarginsGuide']   (Names: '|':_UIButtonBarStackView:0x14dd1c30 )>"
)

Will attempt to recover by breaking constraint 
<NSLayoutConstraint:0x14e947d0 'UIView-bottomMargin-guide-constraint' V:[UILayoutGuide:0x14e84b20'UIViewLayoutMarginsGuide']-(3)-|   (Names: '|':_UIButtonBarStackView:0x14dd1c30 )>

Make a symbolic breakpoint at UIViewAlertForUnsatisfiableConstraints to catch this in the debugger.
The methods in the UIConstraintBasedLayoutDebugging category on UIView listed in <UIKit/UIView.h> may also be helpful.
2015-10-13 14:18:13.839 KeyboardThrowsAutolayoutWarnings[399:167360] Unable to simultaneously satisfy constraints.
	Probably at least one of the constraints in the following list is one you don't want. Try this: (1) look at each constraint and try to figure out which you don't expect; (2) find the code that added the unwanted constraint or constraints and fix it. (Note: If you're seeing NSAutoresizingMaskLayoutConstraints that you don't understand, refer to the documentation for the UIView property translatesAutoresizingMaskIntoConstraints) 
(
    "<NSAutoresizingMaskLayoutConstraint:0x1609c620 h=--& v=--& V:[UIKeyboardAssistantBar:0x14e931d0(0)]>",
    "<NSLayoutConstraint:0x14d878e0 V:|-(0)-[_UIButtonBarStackView:0x14d8a360]   (Names: '|':UIKeyboardAssistantBar:0x14e931d0 )>",
    "<NSLayoutConstraint:0x14d87910 V:[_UIButtonBarStackView:0x14d8a360]-(0)-|   (Names: '|':UIKeyboardAssistantBar:0x14e931d0 )>",
    "<NSLayoutConstraint:0x14e8fbd0 'UIView-bottomMargin-guide-constraint' V:[UILayoutGuide:0x14e8c470'UIViewLayoutMarginsGuide']-(3)-|   (Names: '|':_UIButtonBarStackView:0x14d8a360 )>",
    "<NSLayoutConstraint:0x14eb81e0 'UIView-topMargin-guide-constraint' V:|-(10)-[UILayoutGuide:0x14e8c470'UIViewLayoutMarginsGuide']   (Names: '|':_UIButtonBarStackView:0x14d8a360 )>"
)

Will attempt to recover by breaking constraint 
<NSLayoutConstraint:0x14e8fbd0 'UIView-bottomMargin-guide-constraint' V:[UILayoutGuide:0x14e8c470'UIViewLayoutMarginsGuide']-(3)-|   (Names: '|':_UIButtonBarStackView:0x14d8a360 )>

Make a symbolic breakpoint at UIViewAlertForUnsatisfiableConstraints to catch this in the debugger.
The methods in the UIConstraintBasedLayoutDebugging category on UIView listed in <UIKit/UIView.h> may also be helpful.
2015-10-13 14:18:14.020 KeyboardThrowsAutolayoutWarnings[399:167360] Unable to simultaneously satisfy constraints.
	Probably at least one of the constraints in the following list is one you don't want. Try this: (1) look at each constraint and try to figure out which you don't expect; (2) find the code that added the unwanted constraint or constraints and fix it. (Note: If you're seeing NSAutoresizingMaskLayoutConstraints that you don't understand, refer to the documentation for the UIView property translatesAutoresizingMaskIntoConstraints) 
(
    "<NSAutoresizingMaskLayoutConstraint:0x1609c620 h=--& v=--& V:[UIKeyboardAssistantBar:0x14e931d0(0)]>",
    "<NSLayoutConstraint:0x14d89750 V:|-(0)-[_UIButtonBarStackView:0x14e93820]   (Names: '|':UIKeyboardAssistantBar:0x14e931d0 )>",
    "<NSLayoutConstraint:0x14d89780 V:[_UIButtonBarStackView:0x14e93820]-(0)-|   (Names: '|':UIKeyboardAssistantBar:0x14e931d0 )>",
    "<NSLayoutConstraint:0x14d61f70 V:|-(>=6)-[UIButton:0x14d62400]   (Names: '|':_UIButtonBarButton:0x14d62680 )>",
    "<NSLayoutConstraint:0x14d61d40 UIButton:0x14d62400.centerY == _UIButtonBarButton:0x14d62680.centerY>",
    "<NSLayoutConstraint:0x14d61810 'UIButtonBar.maximumAlignmentSize' _UIButtonBarButton:0x14d62680.height == UILayoutGuide:0x14eb8d40'UIViewLayoutMarginsGuide'.height>",
    "<NSLayoutConstraint:0x14e9e1d0 'UIView-bottomMargin-guide-constraint' V:[UILayoutGuide:0x14eb8d40'UIViewLayoutMarginsGuide']-(3)-|   (Names: '|':_UIButtonBarStackView:0x14e93820 )>",
    "<NSLayoutConstraint:0x14eb23c0 'UIView-topMargin-guide-constraint' V:|-(10)-[UILayoutGuide:0x14eb8d40'UIViewLayoutMarginsGuide']   (Names: '|':_UIButtonBarStackView:0x14e93820 )>"
)

Will attempt to recover by breaking constraint 
<NSLayoutConstraint:0x14d61d40 UIButton:0x14d62400.centerY == _UIButtonBarButton:0x14d62680.centerY>

Make a symbolic breakpoint at UIViewAlertForUnsatisfiableConstraints to catch this in the debugger.
The methods in the UIConstraintBasedLayoutDebugging category on UIView listed in <UIKit/UIView.h> may also be helpful.
2015-10-13 14:18:14.024 KeyboardThrowsAutolayoutWarnings[399:167360] Unable to simultaneously satisfy constraints.
	Probably at least one of the constraints in the following list is one you don't want. Try this: (1) look at each constraint and try to figure out which you don't expect; (2) find the code that added the unwanted constraint or constraints and fix it. (Note: If you're seeing NSAutoresizingMaskLayoutConstraints that you don't understand, refer to the documentation for the UIView property translatesAutoresizingMaskIntoConstraints) 
(
    "<NSAutoresizingMaskLayoutConstraint:0x1609c620 h=--& v=--& V:[UIKeyboardAssistantBar:0x14e931d0(0)]>",
    "<NSLayoutConstraint:0x14d89750 V:|-(0)-[_UIButtonBarStackView:0x14e93820]   (Names: '|':UIKeyboardAssistantBar:0x14e931d0 )>",
    "<NSLayoutConstraint:0x14d89780 V:[_UIButtonBarStackView:0x14e93820]-(0)-|   (Names: '|':UIKeyboardAssistantBar:0x14e931d0 )>",
    "<NSLayoutConstraint:0x14d61f70 V:|-(>=6)-[UIButton:0x14d62400]   (Names: '|':_UIButtonBarButton:0x14d62680 )>",
    "<NSLayoutConstraint:0x14d61ec0 UIButton:0x14d62400.bottom <= _UIButtonBarButton:0x14d62680.bottom - 6>",
    "<NSLayoutConstraint:0x14d61810 'UIButtonBar.maximumAlignmentSize' _UIButtonBarButton:0x14d62680.height == UILayoutGuide:0x14eb8d40'UIViewLayoutMarginsGuide'.height>",
    "<NSLayoutConstraint:0x14e9e1d0 'UIView-bottomMargin-guide-constraint' V:[UILayoutGuide:0x14eb8d40'UIViewLayoutMarginsGuide']-(3)-|   (Names: '|':_UIButtonBarStackView:0x14e93820 )>",
    "<NSLayoutConstraint:0x14eb23c0 'UIView-topMargin-guide-constraint' V:|-(10)-[UILayoutGuide:0x14eb8d40'UIViewLayoutMarginsGuide']   (Names: '|':_UIButtonBarStackView:0x14e93820 )>"
)

Will attempt to recover by breaking constraint 
<NSLayoutConstraint:0x14d61ec0 UIButton:0x14d62400.bottom <= _UIButtonBarButton:0x14d62680.bottom - 6>

Make a symbolic breakpoint at UIViewAlertForUnsatisfiableConstraints to catch this in the debugger.
The methods in the UIConstraintBasedLayoutDebugging category on UIView listed in <UIKit/UIView.h> may also be helpful.
2015-10-13 14:18:14.029 KeyboardThrowsAutolayoutWarnings[399:167360] Unable to simultaneously satisfy constraints.
	Probably at least one of the constraints in the following list is one you don't want. Try this: (1) look at each constraint and try to figure out which you don't expect; (2) find the code that added the unwanted constraint or constraints and fix it. (Note: If you're seeing NSAutoresizingMaskLayoutConstraints that you don't understand, refer to the documentation for the UIView property translatesAutoresizingMaskIntoConstraints) 
(
    "<NSAutoresizingMaskLayoutConstraint:0x1609c620 h=--& v=--& V:[UIKeyboardAssistantBar:0x14e931d0(0)]>",
    "<NSLayoutConstraint:0x14d89750 V:|-(0)-[_UIButtonBarStackView:0x14e93820]   (Names: '|':UIKeyboardAssistantBar:0x14e931d0 )>",
    "<NSLayoutConstraint:0x14d89780 V:[_UIButtonBarStackView:0x14e93820]-(0)-|   (Names: '|':UIKeyboardAssistantBar:0x14e931d0 )>",
    "<NSLayoutConstraint:0x14dcea50 V:|-(>=6)-[UIButton:0x14d62760]   (Names: '|':_UIButtonBarButton:0x14e77960 )>",
    "<NSLayoutConstraint:0x14db3270 UIButton:0x14d62760.centerY == _UIButtonBarButton:0x14e77960.centerY>",
    "<NSLayoutConstraint:0x14d63850 'UIButtonBar.maximumAlignmentSize' _UIButtonBarButton:0x14e77960.height == UILayoutGuide:0x14eb8d40'UIViewLayoutMarginsGuide'.height>",
    "<NSLayoutConstraint:0x14e9e1d0 'UIView-bottomMargin-guide-constraint' V:[UILayoutGuide:0x14eb8d40'UIViewLayoutMarginsGuide']-(3)-|   (Names: '|':_UIButtonBarStackView:0x14e93820 )>",
    "<NSLayoutConstraint:0x14eb23c0 'UIView-topMargin-guide-constraint' V:|-(10)-[UILayoutGuide:0x14eb8d40'UIViewLayoutMarginsGuide']   (Names: '|':_UIButtonBarStackView:0x14e93820 )>"
)

Will attempt to recover by breaking constraint 
<NSLayoutConstraint:0x14db3270 UIButton:0x14d62760.centerY == _UIButtonBarButton:0x14e77960.centerY>

Make a symbolic breakpoint at UIViewAlertForUnsatisfiableConstraints to catch this in the debugger.
The methods in the UIConstraintBasedLayoutDebugging category on UIView listed in <UIKit/UIView.h> may also be helpful.
2015-10-13 14:18:14.033 KeyboardThrowsAutolayoutWarnings[399:167360] Unable to simultaneously satisfy constraints.
	Probably at least one of the constraints in the following list is one you don't want. Try this: (1) look at each constraint and try to figure out which you don't expect; (2) find the code that added the unwanted constraint or constraints and fix it. (Note: If you're seeing NSAutoresizingMaskLayoutConstraints that you don't understand, refer to the documentation for the UIView property translatesAutoresizingMaskIntoConstraints) 
(
    "<NSAutoresizingMaskLayoutConstraint:0x1609c620 h=--& v=--& V:[UIKeyboardAssistantBar:0x14e931d0(0)]>",
    "<NSLayoutConstraint:0x14d89750 V:|-(0)-[_UIButtonBarStackView:0x14e93820]   (Names: '|':UIKeyboardAssistantBar:0x14e931d0 )>",
    "<NSLayoutConstraint:0x14d89780 V:[_UIButtonBarStackView:0x14e93820]-(0)-|   (Names: '|':UIKeyboardAssistantBar:0x14e931d0 )>",
    "<NSLayoutConstraint:0x14dcea50 V:|-(>=6)-[UIButton:0x14d62760]   (Names: '|':_UIButtonBarButton:0x14e77960 )>",
    "<NSLayoutConstraint:0x14de6b10 UIButton:0x14d62760.bottom <= _UIButtonBarButton:0x14e77960.bottom - 6>",
    "<NSLayoutConstraint:0x14d63850 'UIButtonBar.maximumAlignmentSize' _UIButtonBarButton:0x14e77960.height == UILayoutGuide:0x14eb8d40'UIViewLayoutMarginsGuide'.height>",
    "<NSLayoutConstraint:0x14e9e1d0 'UIView-bottomMargin-guide-constraint' V:[UILayoutGuide:0x14eb8d40'UIViewLayoutMarginsGuide']-(3)-|   (Names: '|':_UIButtonBarStackView:0x14e93820 )>",
    "<NSLayoutConstraint:0x14eb23c0 'UIView-topMargin-guide-constraint' V:|-(10)-[UILayoutGuide:0x14eb8d40'UIViewLayoutMarginsGuide']   (Names: '|':_UIButtonBarStackView:0x14e93820 )>"
)

Will attempt to recover by breaking constraint 
<NSLayoutConstraint:0x14de6b10 UIButton:0x14d62760.bottom <= _UIButtonBarButton:0x14e77960.bottom - 6>

Make a symbolic breakpoint at UIViewAlertForUnsatisfiableConstraints to catch this in the debugger.
The methods in the UIConstraintBasedLayoutDebugging category on UIView listed in <UIKit/UIView.h> may also be helpful.
2015-10-13 14:18:14.038 KeyboardThrowsAutolayoutWarnings[399:167360] Unable to simultaneously satisfy constraints.
	Probably at least one of the constraints in the following list is one you don't want. Try this: (1) look at each constraint and try to figure out which you don't expect; (2) find the code that added the unwanted constraint or constraints and fix it. (Note: If you're seeing NSAutoresizingMaskLayoutConstraints that you don't understand, refer to the documentation for the UIView property translatesAutoresizingMaskIntoConstraints) 
(
    "<NSAutoresizingMaskLayoutConstraint:0x1609c620 h=--& v=--& V:[UIKeyboardAssistantBar:0x14e931d0(0)]>",
    "<NSLayoutConstraint:0x14d89750 V:|-(0)-[_UIButtonBarStackView:0x14e93820]   (Names: '|':UIKeyboardAssistantBar:0x14e931d0 )>",
    "<NSLayoutConstraint:0x14d89780 V:[_UIButtonBarStackView:0x14e93820]-(0)-|   (Names: '|':UIKeyboardAssistantBar:0x14e931d0 )>",
    "<NSLayoutConstraint:0x14d60d40 V:|-(>=6)-[UIButton:0x14d61210]   (Names: '|':_UIButtonBarButton:0x14d61430 )>",
    "<NSLayoutConstraint:0x14d60b10 UIButton:0x14d61210.centerY == _UIButtonBarButton:0x14d61430.centerY>",
    "<NSLayoutConstraint:0x14d606c0 'UIButtonBar.maximumAlignmentSize' _UIButtonBarButton:0x14d61430.height == UILayoutGuide:0x14eb8d40'UIViewLayoutMarginsGuide'.height>",
    "<NSLayoutConstraint:0x14e9e1d0 'UIView-bottomMargin-guide-constraint' V:[UILayoutGuide:0x14eb8d40'UIViewLayoutMarginsGuide']-(3)-|   (Names: '|':_UIButtonBarStackView:0x14e93820 )>",
    "<NSLayoutConstraint:0x14eb23c0 'UIView-topMargin-guide-constraint' V:|-(10)-[UILayoutGuide:0x14eb8d40'UIViewLayoutMarginsGuide']   (Names: '|':_UIButtonBarStackView:0x14e93820 )>"
)

Will attempt to recover by breaking constraint 
<NSLayoutConstraint:0x14d60b10 UIButton:0x14d61210.centerY == _UIButtonBarButton:0x14d61430.centerY>

Make a symbolic breakpoint at UIViewAlertForUnsatisfiableConstraints to catch this in the debugger.
The methods in the UIConstraintBasedLayoutDebugging category on UIView listed in <UIKit/UIView.h> may also be helpful.
2015-10-13 14:18:14.042 KeyboardThrowsAutolayoutWarnings[399:167360] Unable to simultaneously satisfy constraints.
	Probably at least one of the constraints in the following list is one you don't want. Try this: (1) look at each constraint and try to figure out which you don't expect; (2) find the code that added the unwanted constraint or constraints and fix it. (Note: If you're seeing NSAutoresizingMaskLayoutConstraints that you don't understand, refer to the documentation for the UIView property translatesAutoresizingMaskIntoConstraints) 
(
    "<NSAutoresizingMaskLayoutConstraint:0x1609c620 h=--& v=--& V:[UIKeyboardAssistantBar:0x14e931d0(0)]>",
    "<NSLayoutConstraint:0x14d89750 V:|-(0)-[_UIButtonBarStackView:0x14e93820]   (Names: '|':UIKeyboardAssistantBar:0x14e931d0 )>",
    "<NSLayoutConstraint:0x14d89780 V:[_UIButtonBarStackView:0x14e93820]-(0)-|   (Names: '|':UIKeyboardAssistantBar:0x14e931d0 )>",
    "<NSLayoutConstraint:0x14d60d40 V:|-(>=6)-[UIButton:0x14d61210]   (Names: '|':_UIButtonBarButton:0x14d61430 )>",
    "<NSLayoutConstraint:0x14d60c90 UIButton:0x14d61210.bottom <= _UIButtonBarButton:0x14d61430.bottom - 6>",
    "<NSLayoutConstraint:0x14d606c0 'UIButtonBar.maximumAlignmentSize' _UIButtonBarButton:0x14d61430.height == UILayoutGuide:0x14eb8d40'UIViewLayoutMarginsGuide'.height>",
    "<NSLayoutConstraint:0x14e9e1d0 'UIView-bottomMargin-guide-constraint' V:[UILayoutGuide:0x14eb8d40'UIViewLayoutMarginsGuide']-(3)-|   (Names: '|':_UIButtonBarStackView:0x14e93820 )>",
    "<NSLayoutConstraint:0x14eb23c0 'UIView-topMargin-guide-constraint' V:|-(10)-[UILayoutGuide:0x14eb8d40'UIViewLayoutMarginsGuide']   (Names: '|':_UIButtonBarStackView:0x14e93820 )>"
)

Will attempt to recover by breaking constraint 
<NSLayoutConstraint:0x14d60c90 UIButton:0x14d61210.bottom <= _UIButtonBarButton:0x14d61430.bottom - 6>

Make a symbolic breakpoint at UIViewAlertForUnsatisfiableConstraints to catch this in the debugger.
The methods in the UIConstraintBasedLayoutDebugging category on UIView listed in <UIKit/UIView.h> may also be helpful.
2015-10-13 14:18:14.047 KeyboardThrowsAutolayoutWarnings[399:167360] Unable to simultaneously satisfy constraints.
	Probably at least one of the constraints in the following list is one you don't want. Try this: (1) look at each constraint and try to figure out which you don't expect; (2) find the code that added the unwanted constraint or constraints and fix it. (Note: If you're seeing NSAutoresizingMaskLayoutConstraints that you don't understand, refer to the documentation for the UIView property translatesAutoresizingMaskIntoConstraints) 
(
    "<NSAutoresizingMaskLayoutConstraint:0x1609c620 h=--& v=--& V:[UIKeyboardAssistantBar:0x14e931d0(0)]>",
    "<NSLayoutConstraint:0x14d89750 V:|-(0)-[_UIButtonBarStackView:0x14e93820]   (Names: '|':UIKeyboardAssistantBar:0x14e931d0 )>",
    "<NSLayoutConstraint:0x14d89780 V:[_UIButtonBarStackView:0x14e93820]-(0)-|   (Names: '|':UIKeyboardAssistantBar:0x14e931d0 )>",
    "<NSLayoutConstraint:0x14d60900 V:|-(0)-[_UIUCBKBSelectionBackground:0x14d60a50]   (Names: '|':_UIButtonBarButton:0x14d61430 )>",
    "<NSLayoutConstraint:0x14d60870 _UIUCBKBSelectionBackground:0x14d60a50.bottom == _UIButtonBarButton:0x14d61430.bottom>",
    "<NSLayoutConstraint:0x14d606c0 'UIButtonBar.maximumAlignmentSize' _UIButtonBarButton:0x14d61430.height == UILayoutGuide:0x14eb8d40'UIViewLayoutMarginsGuide'.height>",
    "<NSLayoutConstraint:0x14e9e1d0 'UIView-bottomMargin-guide-constraint' V:[UILayoutGuide:0x14eb8d40'UIViewLayoutMarginsGuide']-(3)-|   (Names: '|':_UIButtonBarStackView:0x14e93820 )>",
    "<NSLayoutConstraint:0x14eb23c0 'UIView-topMargin-guide-constraint' V:|-(10)-[UILayoutGuide:0x14eb8d40'UIViewLayoutMarginsGuide']   (Names: '|':_UIButtonBarStackView:0x14e93820 )>"
)

Will attempt to recover by breaking constraint 
<NSLayoutConstraint:0x14d60870 _UIUCBKBSelectionBackground:0x14d60a50.bottom == _UIButtonBarButton:0x14d61430.bottom>

Make a symbolic breakpoint at UIViewAlertForUnsatisfiableConstraints to catch this in the debugger.
The methods in the UIConstraintBasedLayoutDebugging category on UIView listed in <UIKit/UIView.h> may also be helpful.
2015-10-13 14:18:14.052 KeyboardThrowsAutolayoutWarnings[399:167360] Unable to simultaneously satisfy constraints.
	Probably at least one of the constraints in the following list is one you don't want. Try this: (1) look at each constraint and try to figure out which you don't expect; (2) find the code that added the unwanted constraint or constraints and fix it. (Note: If you're seeing NSAutoresizingMaskLayoutConstraints that you don't understand, refer to the documentation for the UIView property translatesAutoresizingMaskIntoConstraints) 
(
    "<NSAutoresizingMaskLayoutConstraint:0x1609c620 h=--& v=--& V:[UIKeyboardAssistantBar:0x14e931d0(0)]>",
    "<NSLayoutConstraint:0x14d89750 V:|-(0)-[_UIButtonBarStackView:0x14e93820]   (Names: '|':UIKeyboardAssistantBar:0x14e931d0 )>",
    "<NSLayoutConstraint:0x14d89780 V:[_UIButtonBarStackView:0x14e93820]-(0)-|   (Names: '|':UIKeyboardAssistantBar:0x14e931d0 )>",
    "<NSLayoutConstraint:0x14d61810 'UIButtonBar.maximumAlignmentSize' _UIButtonBarButton:0x14d62680.height == UILayoutGuide:0x14eb8d40'UIViewLayoutMarginsGuide'.height>",
    "<NSLayoutConstraint:0x14e9e1d0 'UIView-bottomMargin-guide-constraint' V:[UILayoutGuide:0x14eb8d40'UIViewLayoutMarginsGuide']-(3)-|   (Names: '|':_UIButtonBarStackView:0x14e93820 )>",
    "<NSLayoutConstraint:0x14eb23c0 'UIView-topMargin-guide-constraint' V:|-(10)-[UILayoutGuide:0x14eb8d40'UIViewLayoutMarginsGuide']   (Names: '|':_UIButtonBarStackView:0x14e93820 )>"
)

Will attempt to recover by breaking constraint 
<NSLayoutConstraint:0x14e9e1d0 'UIView-bottomMargin-guide-constraint' V:[UILayoutGuide:0x14eb8d40'UIViewLayoutMarginsGuide']-(3)-|   (Names: '|':_UIButtonBarStackView:0x14e93820 )>

Make a symbolic breakpoint at UIViewAlertForUnsatisfiableConstraints to catch this in the debugger.
The methods in the UIConstraintBasedLayoutDebugging category on UIView listed in <UIKit/UIView.h> may also be helpful.
2015-10-13 14:18:14.062 KeyboardThrowsAutolayoutWarnings[399:167360] Unable to simultaneously satisfy constraints.
	Probably at least one of the constraints in the following list is one you don't want. Try this: (1) look at each constraint and try to figure out which you don't expect; (2) find the code that added the unwanted constraint or constraints and fix it. (Note: If you're seeing NSAutoresizingMaskLayoutConstraints that you don't understand, refer to the documentation for the UIView property translatesAutoresizingMaskIntoConstraints) 
(
    "<NSAutoresizingMaskLayoutConstraint:0x1609c620 h=--& v=--& V:[UIKeyboardAssistantBar:0x14e931d0(0)]>",
    "<NSLayoutConstraint:0x14d878e0 V:|-(0)-[_UIButtonBarStackView:0x14d8a360]   (Names: '|':UIKeyboardAssistantBar:0x14e931d0 )>",
    "<NSLayoutConstraint:0x14d87910 V:[_UIButtonBarStackView:0x14d8a360]-(0)-|   (Names: '|':UIKeyboardAssistantBar:0x14e931d0 )>",
    "<NSLayoutConstraint:0x14e8fbd0 'UIView-bottomMargin-guide-constraint' V:[UILayoutGuide:0x14e8c470'UIViewLayoutMarginsGuide']-(3)-|   (Names: '|':_UIButtonBarStackView:0x14d8a360 )>",
    "<NSLayoutConstraint:0x14eb81e0 'UIView-topMargin-guide-constraint' V:|-(10)-[UILayoutGuide:0x14e8c470'UIViewLayoutMarginsGuide']   (Names: '|':_UIButtonBarStackView:0x14d8a360 )>"
)

Will attempt to recover by breaking constraint 
<NSLayoutConstraint:0x14e8fbd0 'UIView-bottomMargin-guide-constraint' V:[UILayoutGuide:0x14e8c470'UIViewLayoutMarginsGuide']-(3)-|   (Names: '|':_UIButtonBarStackView:0x14d8a360 )>

Make a symbolic breakpoint at UIViewAlertForUnsatisfiableConstraints to catch this in the debugger.
The methods in the UIConstraintBasedLayoutDebugging category on UIView listed in <UIKit/UIView.h> may also be helpful.
2015-10-13 14:18:14.065 KeyboardThrowsAutolayoutWarnings[399:167360] Unable to simultaneously satisfy constraints.
	Probably at least one of the constraints in the following list is one you don't want. Try this: (1) look at each constraint and try to figure out which you don't expect; (2) find the code that added the unwanted constraint or constraints and fix it. (Note: If you're seeing NSAutoresizingMaskLayoutConstraints that you don't understand, refer to the documentation for the UIView property translatesAutoresizingMaskIntoConstraints) 
(
    "<NSAutoresizingMaskLayoutConstraint:0x1609c620 h=--& v=--& V:[UIKeyboardAssistantBar:0x14e931d0(0)]>",
    "<NSLayoutConstraint:0x14d874c0 V:|-(0)-[_UIButtonBarStackView:0x14dd1c30]   (Names: '|':UIKeyboardAssistantBar:0x14e931d0 )>",
    "<NSLayoutConstraint:0x14d878b0 V:[_UIButtonBarStackView:0x14dd1c30]-(0)-|   (Names: '|':UIKeyboardAssistantBar:0x14e931d0 )>",
    "<NSLayoutConstraint:0x14d9be30 'UISV-canvas-connection' UILayoutGuide:0x14e84b20'UIViewLayoutMarginsGuide'.top == _UILayoutSpacer:0x14f966c0'UISV-alignment-spanner'.top>",
    "<NSLayoutConstraint:0x14fdf560 'UISV-canvas-connection' UILayoutGuide:0x14e84b20'UIViewLayoutMarginsGuide'.bottom == _UILayoutSpacer:0x14f966c0'UISV-alignment-spanner'.bottom>",
    "<NSLayoutConstraint:0x14e947d0 'UIView-bottomMargin-guide-constraint' V:[UILayoutGuide:0x14e84b20'UIViewLayoutMarginsGuide']-(3)-|   (Names: '|':_UIButtonBarStackView:0x14dd1c30 )>",
    "<NSLayoutConstraint:0x14e93b50 'UIView-topMargin-guide-constraint' V:|-(10)-[UILayoutGuide:0x14e84b20'UIViewLayoutMarginsGuide']   (Names: '|':_UIButtonBarStackView:0x14dd1c30 )>"
)

Will attempt to recover by breaking constraint 
<NSLayoutConstraint:0x14fdf560 'UISV-canvas-connection' UILayoutGuide:0x14e84b20'UIViewLayoutMarginsGuide'.bottom == _UILayoutSpacer:0x14f966c0'UISV-alignment-spanner'.bottom>

Make a symbolic breakpoint at UIViewAlertForUnsatisfiableConstraints to catch this in the debugger.
The methods in the UIConstraintBasedLayoutDebugging category on UIView listed in <UIKit/UIView.h> may also be helpful.
2015-10-13 14:18:14.068 KeyboardThrowsAutolayoutWarnings[399:167360] Unable to simultaneously satisfy constraints.
	Probably at least one of the constraints in the following list is one you don't want. Try this: (1) look at each constraint and try to figure out which you don't expect; (2) find the code that added the unwanted constraint or constraints and fix it. (Note: If you're seeing NSAutoresizingMaskLayoutConstraints that you don't understand, refer to the documentation for the UIView property translatesAutoresizingMaskIntoConstraints) 
(
    "<NSAutoresizingMaskLayoutConstraint:0x1609c620 h=--& v=--& V:[UIKeyboardAssistantBar:0x14e931d0(0)]>",
    "<NSLayoutConstraint:0x14d874c0 V:|-(0)-[_UIButtonBarStackView:0x14dd1c30]   (Names: '|':UIKeyboardAssistantBar:0x14e931d0 )>",
    "<NSLayoutConstraint:0x14d878b0 V:[_UIButtonBarStackView:0x14dd1c30]-(0)-|   (Names: '|':UIKeyboardAssistantBar:0x14e931d0 )>",
    "<NSLayoutConstraint:0x14e947d0 'UIView-bottomMargin-guide-constraint' V:[UILayoutGuide:0x14e84b20'UIViewLayoutMarginsGuide']-(3)-|   (Names: '|':_UIButtonBarStackView:0x14dd1c30 )>",
    "<NSLayoutConstraint:0x14e93b50 'UIView-topMargin-guide-constraint' V:|-(10)-[UILayoutGuide:0x14e84b20'UIViewLayoutMarginsGuide']   (Names: '|':_UIButtonBarStackView:0x14dd1c30 )>"
)

Will attempt to recover by breaking constraint 
<NSLayoutConstraint:0x14e947d0 'UIView-bottomMargin-guide-constraint' V:[UILayoutGuide:0x14e84b20'UIViewLayoutMarginsGuide']-(3)-|   (Names: '|':_UIButtonBarStackView:0x14dd1c30 )>

Make a symbolic breakpoint at UIViewAlertForUnsatisfiableConstraints to catch this in the debugger.
The methods in the UIConstraintBasedLayoutDebugging category on UIView listed in <UIKit/UIView.h> may also be helpful.


Steps to Reproduce:
1. Open and execute the attached project on an iPad
2. Change the keyboard-layout to “Emoji”
3. Watch the console in Xcode

This happens in half of all cases we tried it.

Expected Results:
1. The keyboard should work properly and have no autolayout-issues
2. The keyboard should never ever throw any warnings on the console

Actual Results:
1. The keyboard has autolayout-issues
2. The keyboard throws warnings on the console

Regression:
Didn’t happen in iOS 8

Notes:
-
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Community bug reports

iOS 9.0.2: changing the keyboard-layout to "Emoji" shows autolayout-warnings on the console

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