f0c0d11ea2
Locked bones of proxies should not be editable, at all. But lack of update from linked rest pose in 2.7 allows to pose and animate locked bones (not to pose them without animation though, or you'd lose your pose on next file save & reload). this is used by artists to always lock all their bones in a rig, so that proxies fully update when lib rig is modified... For now, restore that broken behavior in 2.8 by not updating proxies against lib armature in CoW context (makes sense anyway, we are currently doing a lot of useless thing when copying data for depsgraph evaluation!).