Reproduction steps:
1. Open the attached “InspectorElement.zip” project
2. Open the Test Window (Sheriff->TEST Window)
3. Make sure the Scene Window is active
4. In the Test Window click the button labeled "Click"
5. Observe the Console
6. Now make sure the Inspector Window is active instead of the Scene Window
7. In the Test Window click the button labeled "Cleanup" and repeat 4th step
8. Observe the Console

Expected result: On both occasions, the "ChildScriptableEditor.OnEnable" only appears once
Actual result: When the Inspector Window is not active the “ChildScriptableEditor.OnEnable" appears twice

Reproducible with: 2021.3.36f1, 2022.3.21f1, 2023.2.15f1, 6000.0.0b11

Reproducible on: Windows 11
Not reproducible on: no other environment tested