Operating system: Windows-10-10.0.18362 64 Bits
Graphics card: GeForce GTX 660/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 416.94
Broken: version: 2.81 (sub 1), branch: master, commit date: 2019-08-08 20:54, hash: rB4c9fe657458f
Short description of error
When using: Weights -> Normalize All, with Lock active option, the active group is not locked correctly - on one vert weight is increased.
Exact steps for others to reproduce the error
1)Use: Weights -> Normalize All, with Lock active option on selected mesh vertices.
- all weights on current group verices should have stayed the same, but center right ver weight is increased.