How to reproduce:
1. Open the attached “IN-99191” project
2. Open the “SampleScene“
3. Go to the Scene view
4. In the Hierarchy window, select the “Terrain“ GameObject and go to the Inspector window
5. In the Terrain component, select “Terrain Settings“
6. Click on the Hierarchy window (should result in the Inspector window becoming empty)
7. Select the “Terrain“ GameObject and go to the Inspector window
8. Observe the results in the Terrain component

Expected result: The "Terrain Settings" tab is active
Actual result: “Create Neighbor Terrains“ (the previous tab before the "Terrain Settings") tab is active

Reproducible with: 6000.0.42f1, 6000.0.47f1, 6000.1.0b15, 6000.2.0a9
Not reproducible with: 2022.3.61f1, 6000.0.41f1

Reproducible on: MacOS 15.3 (M4), Windows 10 (by user)
Not reproducible on: No other environments tested

Note: The issue only reproduces if the Scene view is visible and only with the “Terrain Settings" tab