Open Radar

 
Summary:
Calling insertRowsAtIndexPaths on a tableview causes other cells in the tableview to layout - worse, the layout engine gets the layout wrong.

In the attached project, clicking on a cell cause new cells to be added in a section under the cell tapped. When those cells are added, cells in other sections layout and without adding or removing constraints) those cells generate layout warnings:

	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) 
(
    "<NSLayoutConstraint:0x7ffa92c4a880 V:[UILabel:0x7ffa92c4a6d0'Some other text'(21)]>",
    "<NSLayoutConstraint:0x7ffa92c4b0e0 UILabel:0x7ffa92c48b60'TapMe and see what happen...'.top == UITableViewCellContentView:0x7ffa92c49940.topMargin + 6>",
    "<NSLayoutConstraint:0x7ffa92c4b1d0 UILabel:0x7ffa92c4a6d0'Some other text'.bottom == UITableViewCellContentView:0x7ffa92c49940.bottomMargin>",
    "<NSLayoutConstraint:0x7ffa92c4b220 V:[UILabel:0x7ffa92c48b60'TapMe and see what happen...']-(12)-[UILabel:0x7ffa92c4a6d0'Some other text']>",
    "<NSLayoutConstraint:0x7ffa92f3fda0 'UIView-Encapsulated-Layout-Height' V:[UITableViewCellContentView:0x7ffa92c49940(43.5)]>"
)

Steps to Reproduce:
call insertRowsAtIndexPaths in a section with a moderately complex auto layout cell.

Expected Results:
cells are added, things look OK.

Actual Results:
It looks awful. The console barfs.

Version:
6A1030

Notes:
a workaround would be nice :-)

Configuration:
Xcode 6.1B2

Attachments:
'AutoLayout.zip' was successfully uploaded.