Steps to reproduce:
1. Create a new project or open an existing one
2. Create a Cube in Hierarchy
3. Make that Cube prefab by dragging it to the Project View
4. Select the Cube prefab instance in Hierarchy
5. Find Mesh Renderer component in Inspector window
6. Change Materials property to two
7. Expand the dropdown
8. Notice blue override indicator next to "Materials"

Expected result: Override indicator is shown just for the header
Actual result: Override indicator extends beyond the header element bounds creating a separated indicator dot below

Reproducible with: 2020.2.3f1, 2020.3.27f1, 2021.2.9f1, 2022.1.0b5, 2022.2.0a2
Not reproducible with: 2019.4.34f1 (Size in Materials was in a separate row), 2020.2.2f1