Post #607: 
rhyging5:
hello roaoao, sorry for disturb again; when tryng to use the custom panel “bone constraints”, it simple doesn’t appears in the pop-up. I’m using this code:
panel(T.BONE_PT_constraints, frame=False, header=False)
It can be fixed?
This panel doesn’t work properly in pop-ups.
Will try to fix this for Blender 2.79.