How to reproduce:
1. Create and open a new project
2. Create a Button, right click in the Hierarchy and go to UI > Button - TextMeshPro
3. In the Inspector, Rect Transform component, change Pivot X and Y values to 1
4. Select “Rect Tool” from the Tools overlay, in the Scene view
5. Make sure pivot mode in the Tool Settings is set to Pivot
6. Click and hold one of the Button's corners
7. Press and hold Alt key
8. Drag the Button’s corner
9. Observe the Scene view, the Inspector and the Console
Expected results: Button is resized, values in the Rect Transform component change accordingly, no errors in the Console
Actual results: Button disappears, values in the Rect Transform component are changed to NaN, error is thrown in the Console
Reproducible with: 2022.1.0a1, 2022.3.61f1, 6000.0.46f1, 6000.1.0b14, 6000.2.0a8
Reproducible on: Windows 11
Not reproducible on: No other environments tested
Notes:
- To reproduce the issue any one (or both) of the Pivot’s X or Y values has to be 0 or 1
- Some corners do not reproduce the issue, depends on the Pivot X and Y values combination
- Some properties are also set to NaN in the Rect Transform component for all children of the UI element
- Undo only reverts changes in the UI element’s Rect Transform component, does not revert changes in children