System Information
Operating system: Linux-5.3.0-62-generic-x86_64-with-debian-buster-sid 64 Bits
Graphics card: Quadro GP100/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 440.100
Blender Version
Broken: version: 2.91.0 Alpha, branch: master, commit date: 2020-07-27 07:06, hash: rB6d42ffe03c4a
Short description of error
Hidden face sets are not affected by changes in the mesh, colors or mask. So when inverting a mask, the hidden face sets will keep their state of masking intact.
On a mesh without a multires modifier it will keep the mask sharp between the face sets but when using a multires modifier it will smooth past what is hidden and what is shown.
The mask should remain sharp and accurate.
In this example I am hiding a face set (Shift + H) and inverting the mask (A) to compare the result on the left (no multires) to the right (with multires).
Exact steps for others to reproduce the error
#Open file
- Hide center face set (green)
- Draw mask somewhere on mesh that is visible
- Invert mask
- Show all face sets
Repeat steps 2-4 for another object and compare results.