Reproduction steps:
1. Create a new project
2. Create any Standard Element (GameObject > UI Toolkit > Standard Elements)
3. Create UI Document
4. Select the newly created Standard Element
5. Expand any Inspector section that has fields with a unit dropdown (e.g. Position section)
6. Navigate through the section by pressing the tab key repeatedly
Actual result: Selection gets stuck on the field with a unit dropdown
Expected result: Selection moves to different field each time tab key is pressed
Reproducible with: 6000.6.0a7, 6000.6.0b5, 6000.7.0a3
Couldn’t reproduce with: 6000.0.80f1, 6000.3.20f1, 6000.5.5f1, 6000.6.0a6 (No Standard Elements option)
Reproduced on: Windows 11, macOS Tahoe 26.5 (M4)
Note: Issue is not reproducible in UI Builder window