Operating system: Windows-10-10.0.18362 64 Bits
Graphics card: GeForce GTX 1060 6GB/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 430.86
Broken: version: 2.81 (sub 15), branch: master, commit date: 2019-10-15 17:59, hash: rBcfb6ffd48f77
Short description of error
Expand mask was a bug after Undo
Exact steps for others to reproduce the error
In Sculpt mode
- Shift+A or Shift+Alt+A for expand some mask
- Press Ctrl+Z for undo
- Try to sculpt for all area of mesh, brush affect slupture on more area than mask was select, but not all.
Masking with Box Mask tool has same bug. Mask Brush work normally after Ctrl+Z.
For manually fix it, change Sculp mode, If after masking press Alt+M, sculp mode work correctly.