Regression: UINavigationBar with prompt doesn't animate push/pop

Originator:futuretap
Number:rdar://36877929 Date Originated:25-Jan.-2018 09:15 PM
Status:Duplicate/34546437/Open Resolved:
Product:iOS + SDK Product Version:11.2
Classification:UI/Usability Reproducible:Always
 
Summary:
On a UINavigationBar with prompt, when a view controller (also with prompt) is pushed, the navigation bar doesn't animate the title and back button.

Steps to Reproduce:
Build and run the attached sample project.

Expected Results:
When "Push" is tapped, the navigation bar should animate its content. When going back, the content should be animated likewise.

Actual Results:
Neither content is animated.

Version:
11.2

Notes:
When the prompt is removed, the animation works as usual.

Also, a CGPostError is thrown (I've enabled a break point for that) and an error is logged:

[Unknown process name] CGAffineTransformInvert: singular matrix.

This worked fine in iOS 10.3.

Comments


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