Open Radar

 
Summary:
When editing a single view XIB with autolayout enabled and the live autoresize feature turned on in Editor->Canvas->Live Autoresizing resizing the top-level view doesn’t cause its subviews to automatically resize/relayout. This makes it more difficult to understand how the constraints are behaving.

Steps to Reproduce:
1. Create a single view XIB. Set the file’s owner to NSViewController (or a subclass thereof).
2. Make sure Auto Layout is enabled in the File Inspector
3. Add some subviews and constraints
4. Make sure Live Autoresizing is turned on in Editor->Canvas->Live Autoresizing.
5. Resize the top-level view by dragging the corner.

Expected Results:
The subviews’ layout updates in realtime based on the constraints that have been set up.

Actual Results:
The subviews size and position remains the same exactly as if Live Autoresizing were disabled.

Version:
Xcode 6.3.2 (6D2102)

Notes:
A video of this behavior can be seen here: http://recordit.co/SGDTgZ71Md

Configuration:
I seem to recall this working in older versions of Xcode but I didn’t use Auto Layout much until Xcode 6.x so my memory could be faulty.