Steps to reproduce:
1. Create new Unity project
2. Create UI Document in Hierarchy
3. Create UI Document in Project window
4. Make sure Source Asset is added in Inspector window for UI Document
5. Double-click on the newly created UI Document to open UI Builder window
6. Drag “Enum” element to Hierarchy (from “Controls”)
7. Save UI Builder changes
8. Enter Play mode in Editor
9. Press on Enum dropdown in Game view
10. Hover mouse on “Center” text in the dropdown menu
11. Observe the check mark on the left side  

Actual results: Check mark is misaligned, shown at the top left side
Expected results: Check mark is not misaligned, shown in the middle

Reproducible with versions: 6000.0.51f1, 6000.1.8f1, 6000.2.0b6 

Tested on (OS): macOS Silicon, Sequoia 15.5