How to reproduce:
1. Create a new Unity project
2. Set up the UI Document with the multiple default buttons in it
3. Enter the Play Mode
4. Simultaneously click multiple buttons with the touch controls
5. Observe the results
Expected results: Multiple input doesn't break button behavior
Actual results: Some buttons stay in the clicked or selected state
Reproducible with: 6000.0.29f1
Not reproducible with: 2021.3.46f1, 2022.3.53f1
Reproducible on: Windows 11 (ARM)
Not reproducible on: No other environment tested
Notes:
- Unable to find a regressed version due to hardware limitations
- The issue is more visible with a complete project (e.g. QuizU Sample project)
- Reproducible in both Player and Play Mode but more visible in Player
- Clicking the "stuck" button with the mouse doesn't always resolve the issue