How to reproduce:
1. Open the attached “IN-130540“ project
2. In the Assets folder, select “New Auto Tile“
3. In the Inspector window, click the “Load“ button
4. In the opened dialogue box, click “Cancel“
5. Observe the Console window

Actual result: Warning appears in the Console window
Expected result: No warning appears in the Console window

Reproducible with: 4.3.0 (6000.1.0a9), 6.0.1 (6000.3.5f1), 8.0.0-exp.1 (6000.4.0b5, 6000.5.0a5),
Could not test with: 4.1.0 (6000.0.66f1) (AutoTiles were only added in 4.3.0)

Reproducible on: Windows 11
Not reproducible on: No other environments tested

Note: The following warning appears - “does not contain a valid AutoTileTemplate.UnityEditor.GUIView:ProcessEvent (UnityEngine.EntityId,intptr,bool&)“