How to reproduce:
1. Open attached “IN-103094” project
2. In the Project tab, open the “test.uxml” file
3. In the UI Builder Hierarchy, select “test1” element
4. In the Inspector, change the name of the element (“test3” for example)
5. Click on “test2” element (or any other element)
6. Repeat steps 3-5
7. Observe the Console

Expected result: No errors or warnings are thrown
Actual result: “NotSupportedException” and “FocusController has unprocessed focus events. Clearing.” warning are thrown

Reproducible with: 6000.2.0b1 (1618a92a88ac), 6000.2.0b4
Not reproducible with: 2022.3.62f1, 6000.0.50f1, 6000.1.6f1, 6000.2.0a10

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

Notes:
- Does not reproduce if the name is changed in the Hierarchy
- After step 5 the element name is not changed in the Hierarchy, or saved, but can be observed in the Inspector when the element is selected
- After reproducing the issue, the “NotSupportedException” error will be thrown every time the element is renamed