Mac OS X 64-bit, no graphics card. 2015 MacBook Air
Did not see this file working in latest 2.79 build either
Short description of error
Applying a custom shape to a control bone is not working in this file.
It works fine in other files.
The original file used to be populated with several objects. I deleted them to just work on a set of transferable arms.
Exact steps for others to reproduce the error
Load attached blend file.
Highlighted bone in POSE mode is left ring finger bend control bone. Scale it and the finger bends (this works fine).
Look in properties tab to see that a Custom Shape is applied. This 2-sided arrow exists in another layer.
Notice the bone is still octahedral.
Bone cannot change shape.