Operating system: Linux-5.8.16-2-MANJARO-x86_64-with-arch-Manjaro-Linux 64 Bits
Graphics card: GeForce GTX 660/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 440.100
Broken: version: 2.92.0 Alpha, branch: master, commit date: 2020-10-27 14:27, hash: rB90e12e823ff0
Worked: (newest version of Blender that worked as expected)
Short description of error
Error when using the grab brush with grab silhouette option and mirror activated.
Exact steps for others to reproduce the error
The steps in the attached video