How to reproduce:
1. Open the attached "SpeedTree"
2. Open the "s" Scene
3. In the Hierarchy, select the "Tree" GameObject
4. In the Inspector, select the "Branch Group" and then unfocus the GameObject
5. Select the "Tree" GameObject in the Hierarchy again and open any dropdown in the Inspector
Expected results: The Hierarchy has no pink line
Actual results: The pink line is drawn in the Hierarchy
Reproducible with: 2022.2.0a4, 2022.3.48f1, 6000.0.21f1
Not reproducible with: 2021.3.44f1, 2022.2.0a3
Reproducible on: Windows 11 Pro
Not reproducible on: No other environment tested
Note: Reproducible only when the GameObject was unfocused with the "Branch Group" selected, not reproducible when "Branch Group" is selected and dropdown is opened without unfocusing the GameObject