**System Information**
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
**Blender Version**
Broken: 2.92 release, 2.93.0 Alpha, branch: master, commit date: 2021-03-26 21:30, hash: `rB9b87d3f02962`
Worked: 2.83.9
**Short description of error**
As title says, combination of global automasking to face sets boundary and face set painting produces this:
{F9912307}
{F9912310}
{F9912321}