Steps to reproduce:
1. Open original project "New Unity Project (32).zip"
2. Open the Physics Debugger from Window /Analysis
3. Create a Cube and select it in the Hierarchy
4. Click on "Selected Object Info" foldout icon and notice that nothing appears under
5. Expand the "Collider Types" section
6. Notice that the "Selected Object Info" field appear under "Selected Object Info"

Expected result: "Selected Object Info" section should not be tied to "Collider Types" section
Actual result: "Selected Object Info" only expands if "Collider Types" is expanded.

Reproduced in 2019.1.0a7, 2019.1.0b2, 2019.2.0a3

Note: Could not reproduce with older Unity versions because it's only present with new Physics debugger UI.