Radial mask scales when moving after rotation (Lightroom Desktop 9.3)

After rotating a radial mask (~25° or more), moving the mask causes it to increase in size with each drag. Translation appears to trigger scaling, making the mask impossible to control.

Occurs on macOS using a trackpad (Lightroom Desktop 9.2 and 9.3). Works correctly in version 8.5.1 and in the web version, so this appears to be a regression introduced after 8.5.1.
 

Steps to reproduce:

1. Open an image in Lightroom Desktop (macOS)
2. Create a Radial Gradient mask
3. Adjust size/position – works normally
4. Rotate the mask slightly – still works
5. Rotate further (~25° or more)
6. Drag the mask to reposition it

Result:

• The mask increases in size while dragging (scales instead of just moving)

Expected:

• Dragging should only move (translate) the mask, regardless of rotation