Open Radar

 
Area:
UIKit

Summary:
This bug is seen on iOS 10 when built in either XCode 7 or 8

We have a table view with UITableViewAutomaticDimension. When placing a view inside a cell, animating intrinsicContentSize changes using animateWithDuration, and animating the cell size change with beginUpdates/EndUpdates, the cell frame animates but the contentView frame jumps immediately to the new position.

Steps to Reproduce:
In an XCode 7 project:

1. Create a table view with UITableViewAutomaticDimension
2. Add a view to one of the cells with edge constraints
3. Animate intrinsicContentSize change to the view with animateWithDuration / layoutIfNeeded
4. Animate the cell height change with beginUpdates/EndUpdates

Expected Results:
Cell, content view, and subview all animate the height change together.

Actual Results:
On iOS 10, the cell and subview are animated. The content view immediately jumps to the end position.
On iOS 9, the cell, content view and subview are all animated.

Version:
XCode 7 / iOS 10 Betas 1-4

Notes:
I've attached an XCode 7 project that demonstrates this, the cell (yellow) and content view (blue) do not animate together.

Configuration:
Simulator and device

Attachments:
'TransitionTest.zip' was successfully uploaded.