UINavigationController pushes prevent user interaction

Originator:lap.felix
Number:rdar://41215591 Date Originated:June 18 2018, 1:41 PM
Status:Open Resolved:
Product:iOS + SDK Product Version:12.0 Beta 1
Classification:UIKit Reproducible:Always
 
Summary:
When pushing a new view controller onto a UINavigationController’s stack, there’s a nice animation that eases out. However, during that animation (especially the last 30% where it slowly finishes), touches are ignored.

Steps to Reproduce:
- Turn on slow animations in the simulator (to make the issue even easier to reproduce)
- Push a view controller onto a UINavigationController
- Tap a button in that view controller during the animation

(I attached a simple sample project)

Expected Results:
The button should respond to touches

Actual Results:
The button doesn’t respond to touches. UI feels unresponsive.

Version:
12.0

Notes:
If I know what button/control to hit next and I tap it right away then it’s always going to ignore the first touch, which makes it frustrating.

Configuration:

Comments

Attached sample project: https://dsc.cloud/felix/UINavigationControllerPush.zip

By lap.felix at June 18, 2018, 6:30 p.m. (reply...)

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