Open Radar

 
Summary:
When using TableView row animations in combination with a tableHeaderView, the tableHeaderView is slightly (1-2 pt) shifted to the right and back to the left while the row animation is in flight.

Steps to Reproduce:
Open the QuickContacts app in Xcode 4.6 (in order to compile it under the 6.1 SDK) and install it on an iPhone running iOS 7 beta.
Tap "Display and Edit Contact" (requires a contact named "John Appleseed")
Tap "Edit" and "Done"
Watch the tableHeaderView closely, in particular vertical lines such as from the Name labels or the photo frame.

Expected Results:
While animating between Edit and normal mode the elements of the tableHeaderView should not move horizontally.

Actual Results:
They do move 1-2 pt to the right and back to the left.

Regression:
This works fine on iOS 6.1.

Notes:
This does not only affect AddressBookUI view controllers but all tableViews doing similar row animations. I just used ABUI as a canonical and easily reproducible test case.

See also this screen movie where you can better see the issue by stepping through the single frames of the animation:
http://d.pr/v/86PB


Apple Developer Relations, 18-Sep-2013 10:38 PM:
This problem goes away if you build with the iOS 7 SDK.


Ortwin Gentz, 19-Sep-2013 10:48 PM:
That's true but I filed the bug specifically for the case where it's built with the iOS 6 SDK.