How to reproduce:
1. Open the attached “IN-136535“ project
2. Open the “uibuildertest.uxml” in the UI builder (Assets > uibuildertest.uxml)
3. Click on the border of the Canvas so it turns blue
4. Shrink the Canvas in the UI Builder by dragging from the edge of the canvas
5. Observe the freeze
Reproducible with: 6000.0.57f1, 6000.0.70f1, 6000.3.11f1, 6000.4.0b12, 6000.5.0a8
Not reproducible with: 6000.0.56f1
Reproduced on: Windows 11
Not reproduced on: No other environment tested
Notes:
- The issue does not reproduce when the TextMeshPro package is removed
- Also reproducible in Player when resizing the Build window