How to reproduce:
1. Open a scene
2. Open a custom Editor window
3. Dock the custom Editor in an area with an existing window (for example, the Inspector)
4. Open a different scene
5. Switch to a different docked tab, and then back to the custom Editor window

Expected result: The UI is rendered and does not lose any elements
Actual result: The UI loses all elements or fails to render

Reproducible with: 6000.0.7f1

Notes:

* Not reproduced by CQA due to not having a reproducible project
* The user did not provide information about the system and OS used to reproduce the issue
* The user is using the Odin Inspector and Serializer