How to reproduce:
1. Create a new project
2. Create two empty GameObjects "A" and "B" -> Drag drop-in project to make prefabs
3. Make B a child of A.
4. Select A -> In Override window select B -> Change the prefab's name -> Press Enter or Deselect the Prefab to confirm the new name
5. Observe that the prefab's name changed in the Hierarchy but not in the Override Window

Expected result: Override Window correctly reflects the new changes
Actual result: Override Window does not repaint and the prefab's name remains the same

Reproduced in: 2021.2.0a1, 2021.1.0a10, 2020.2.0f1, 2020.1.17f1, 2019.4.16f1, 2018.4.30f1