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. In UI Builder enable Editor Extension Authoring
7. Drag “Tag” element to Hierarchy
8. Save UI Builder changes
9. Enter Play mode in Editor
10. Press on “Player” dropdown
11. Hover mouse on “Player” text in the dropdown menu
12. 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