Reproduction steps:
1. Open the attached project "ReproProj"
2. Open the “/Assets/Scenes/SampleScene.unity” Scene
3. Enter the Play Mode
4. Repeatedly click the Button with text “Toggle UI B (SetActive)“

Expected result: Button always reacts to clicks
Actual result: UI input becomes unresponsive

Reproducible with: 6000.0.57f1, 6000.2.4f1, 6000.3.0a6

Reproducible on:
Play Mode
Windows Standalone Player

Testing environment: Windows 10 Enterprise 21H2, macOS (user reported)
Not reproducible on: No other environment tested

Notes:
- Issue seems related to “captured = this.GetCapturingDocument(pointerId, out capturingDocument);”
- PointerDeviceState.s_PlayerPanelWithSoftPointerCapture doesn't seem to be reset correctly when the UIDocument is destroyed