List content size does not update in the Inspector when discarding scene changes

Steps to reproduce:
1. Open the attached “IN-124439.zip” project
2. Open the “ScriptScene” scene
3. Select the “Cube“ GameObject
4. In the Inspector navigate to the “ListInspectorTest” script
5. Add 4-5 items to the list
6. Open the “NewScene“ scene - discard all changes when prompted
7. Reopen the “ScriptScene“ scene
8. Select the “Cube“ GameObject
9. Observe the “ListInspectorTest” Script

Expected Results: The list is empty and the size does not scale with added elements
Actual Result: The list is empty but its size is proportional to how many items were added

Reproducible with: 6000.0.62f1, 6000.2.13f1, 6000.3.0f1, 6000.4.0a1, 6000.4.0a5, 6000.5.0a1
Not reproducible with: 6000.3.0a6

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