Steps to reproduce:
- Open the attached Project and the Scene "IA_Main"
- In the Hierarchy expand the "ScreenUI" Game Object and open the Document below it in Context with the arrow button right next to it
- Double click the MainMenu.uxml Document in the Project Browser to open it in UI Builder
- In UI Builder select all Elements and delete them, then save the document
- Observe the Console
Actual results: Errors "Accessing invalid property
UnityEngine.UIElements.UIElementsRuntimeUtilityNative:UpdatePanels ()" are logged in Console
Expected results: Document is saved and no Errors are logged
Reproducible with versions: 6000.6.0b8, 6000.7.0a4
Can’t test with versions: 6000.0.81f1, 6000.3.22f1, 6000.5.8f1 (No in-Scene UI Authoring)
Tested on (OS): Windows 11