Steps to reproduce:

1. Create a new Unity project
2. Open UI Toolkit Debugger (Window > UI Toolkit > Debugger)
3. Click on the "Select a panel" dropdown and select "Toolbar"
4. Click the "Texture Atlas Viewer" button in the UI Toolkit Debugger window
5. Click the "Text Overlays" dropdown button
6. Observe the Editor

Actual results: "Text Overlays" dropdown is opened in the middle of the Dynamic Atlas Viewer window

Expected results: "Text Overlays" dropdown is opened in the UI Toolkit Debugger window just below the "Text Overlays" button

Reproducible with versions: 6000.0.43f1, 6000.1.0b11

Not reproducible with versions: 6000.2.0a7

Can’t test with versions: 2021.3.50f1, 2022.3.60f1 (Texture Atlas Viewer and Text Overlays not available)

Tested on (OS): MacOS Silicon Sequoia 15.3

Notes:

• Reproduces with any selected Panel that has an atlas available, found Toolbar to be the most consistent one to reproduce the issue
• Sometimes have to repeat step 5 multiple times to reproduces the issue, sometimes the dropdown is open correctly, other times it's not.