since own rB5d9d32fd1fa3 (mirror bbone scaling in editmode)
- bbone scaling in posemode was missing immediate updates
- bbone scaling in posemode could crash
This now properly supports mirroring in posemode as well.
note: for bbone scaling, I made both X-Axis-Mirror options (editmode
option as well as posemode option) valid.
Fixes T64091
Reviewers: brecht
Maniphest Tasks: T64091
Differential Revision: https://developer.blender.org/D4851
c6f975e3e5