How to reproduce:
1. Create or open the “IN-112149” Project
2. Right click on the Hierarchy and add an empty GameObject
3. Select the created GameObject
4. In the Inspector add a "LOD Group" Component
5. Right click on any of the LOD Levels and press "Insert Before"
6. Observe the Console Window and the LOD Levels in the Inspector

Expected results: Inserting adds another “LOD Group” Level and no error gets thrown in the Console
Actual results: “LOD Group” Levels get partially greyed out and an error is thrown in the Console

Reproducible with: 6000.2.0a7, 6000.2.1f1, 6000.3.0a5
Not reproducible with: 6000.0.56f1, 6000.2.0a6

Reproducible on: Windows 11 Pro (24H2)
Not reproducible on: No other environments tested

Notes:
- If you delete a "LOD Group" level and then insert a new level, it will add it like expected.
- Selecting another GameObject in the Hierarchy and reselecting the GameObject with the “LOD Group” component removes the greyed out area and shows the added Level, it also does not throw any more errors
- Error:
IndexOutOfRangeException: Index was outside the bounds of the array.