Reproduction steps:
1. Open the attached “IN-90850.zip” project
2. Go to Herve > Open Dialogue Editor
3. In the Project Window, go to Assets > Herve > Resources > Dialogue Assets
4. Select any of the assets
5. From the Project Window, open “DialogueEditorView.uss“ in a code editor
6. Edit the “MiniMap” type selector to set the width to 500px instead of 200px
7. Observe the Window opened in 2nd step

Expected result: The “MiniMap” width is changed
Actual result: The “MiniMap” width is unchanged

Reproducible with: 2022.3.57f1, 6000.0.36f1, 6000.1.0b4, 6000.2.0a1

Reproducible on: Windows 10 (User reported), Windows 11
Not reproducible on: No other environment tested

Notes:
- Reopening the Window shows the expected result
- Does not reproduce with other selectors