Operating system: Windows-8.1-6.3.9600-SP0 64 Bits
Graphics card: GeForce GTX 660 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 461.40
Broken: version: 2.93.0 Alpha, branch: master, commit date: 2021-03-26 21:30, hash: rB9b87d3f02962
Worked: (newest version of Blender that worked as expected)
Short description of error
Sculpt Vertex colors appear and disappear when I use few objects with modifiers and VC.
You can test with my file.