Operating system: Windows 7
Graphics card: GeForce GTX 650Ti
Broken: Blender 2.91 Official Release and 2.91.1 alpha from january 14
Worked: Blender 2.90 Official Realease
Short description of error
When painting weights of a bone activating the "x" in the option menu of the brush will also activate automatically the "Mirror" on the X axis in the "Symmetry" menu which is not what i need.
Exact steps for others to reproduce the error
Just enable X and Mirror in X will enable when painting skin weights.