Reproduction steps:
1. Create a new project
2. Create > UI Toolkit > UI Document
3. Double-click the newly created Asset to open UI Builder window
4. Drag and drop any Element into the Hierarchy
5. Select the newly added Element and expand Display section in the Inspector
6. Observe the “Inline Value” button of the Display field
Actual result: “Inline Value” button is smaller than other buttons and has no icon
Expected result: “Inline Value” button is the same size as other buttons and has an icon
Reproducible with: 6000.6.0b9, 6000.7.0a5
Couldn’t reproduce with: 6000.0.82f1, 6000.3.22f1, 6000.5.9f1, 6000.6.0b8, 6000.7.0a4 (No “Inline Value” button)
Reproduced on: macOS Tahoe 26.5 (M4)
Note: Issue is also reproducible in UI Staging Mode