Operating system: Darwin-19.3.0-x86_64-i386-64bit 64 Bits
Graphics card: AMD Radeon Pro 560X OpenGL Engine ATI Technologies Inc. 4.1 ATI-3.5.5
Broken: version: 2.83 (sub 14), branch: master, commit date: 2020-04-23 08:25, hash: rB8dedbb174783
Worked: (newest version of Blender that worked as expected)
Short description of error
When I'm working with Multires active on Sculpt Mode I get those weird glitches. The colours shown are the same from the previous material used on the model, which is weird.
Exact steps for others to reproduce the error
Don't know how to reproduce, but I'm attaching the file and a video of the problem.