Steps to reproduce:
1. Create a project
2. Open UI Toolkit Debugger window (Window > UI Toolkit > Debugger)
3. Press “Pick Element” button and select any window (e.g. Project window)
4. Select first dropdown in the UI Toolkit Debugger window
5. Change Usage Hint value to Everything
6. Observe the Inspector window
Actual results: “Assertion failed
UnityEngine.GUIUtility:ProcessEvent (int,intptr,bool&)” error is thrown
Expected results: No errors or warnings are thrown
Reproducible with versions: 6000.2.0a7, 6000.2.4f1, 6000.3.0b1
Not reproducible with versions: 2021.3.56f1, 2022.3.66f1, 6000.0.57f1, 6000.2.0a6
Tested on (OS): macOS Sequoia 15.4 (M4), Windows 11
Note: Error is also thrown when setting the value back to default value