Reproduction steps:
1. Create a new project
2. Double-click on any window tab to maximize it (e.g. Animation window)
3. Close the Editor
4. Create a new project
5. Double-click on new projects maximized window to minimize it
Actual result: “Revert All Window Layouts” pop-up window appears and “Maximized serialized file backup not found.
UnityEditor.GUIView:ProcessEvent (UnityEngine.EntityId,intptr,bool&) (at /Users/bokken/build/output/unity/unity/Editor/Mono/GUIView.cs:70)” error is thrown after pressing “Continue” button
Expected result: No “Revert All Window Layouts” pop-ups, warnings or errors are thrown
Reproducible with: 2023.3.0a2, 6000.0.72f1, 6000.3.12f1, 6000.4.1f1, 6000.5.0b2, 6000.6.0a2
Reproduced on: macOS Tahoe 26.3 (M4), Windows 11