i use hide bone by name on begin play.
the mixamo skeleton seems to work.
the skeleton from makehuman doesnt.
i have the same if i pick leg or hand instead of head.
both bones are named head.
would take a lot of time to redo all my skeletons in blender.
prolem is not in my physics asset i think. when i change physics asset to none the head still streches.
I build the skeletons in makehuman nightly with uengine rig.
the UE mannequin has no problems either.
Ill try export with other rigs now but I dont know where the problem is so Im afraid ill have to redo all my skeletons if this doesnt work either
If you import from makehuman to blender and export to UE4 this does not happen anymore