MissingReferenceException and broken Hierarchy visual when removing a PanelRenderer Component

Steps to reproduce:

1. Create and open a new project
2. Open 'Edit -> Project Settings -> UI Toolkit'
3. Enable 'in-scene UI Authoring'
4. In Hierarchy, right-click -> UI Toolkit -> Standard Elements -> Visual Element
5. Select the PanelRenderer GameObject
6. Expand and select any one of the Object fields in the Inspector (don't open Object picker
7. Collapse the Component
8. Click on the hamburger menu icon and press 'Remove Component'
9. Observe the Console and Hierarchy (Might need to be collapsed to see the effects)

Actual results: a 'MissingReferenceException: The object of type 'UnityEngine.UIElements.PanelRenderer' has been destroyed but you are still trying to access it.' is thrown and A detached reference to the UI hierarchy or its parts remains

Expected results: No error is thrown, Hierarchy renders as usual with no artifacts

Reproducible with versions: 6000.6.0a1, 6000.6.1f1, 6000.7.0a6

Can’t test with versions: 6000.0.83f1, 6000.3.24f1 (No Panel Renderer)

Tested on (OS): Windows 11 Pro (25H2)

Notes:

• The issue is quite inconsistent to reproduce, if this happens try Undoing and Redoing the Component removal
• Reloading the Hierarchy removes the artifacts until another reproduction
• When trying to expand the artifact another error is thrown: 'InvalidOperationException: HierarchyNode() not found'