Hide Bone in constructor does not update world instances

Hiding bones during construction is not properly displayed by level instances placed at editor time.

Note that setting 'Update animation in editor' on the mesh and re-running the constructor script(by dragging) can make a level instance properly hide the bone. However this can be an undesirable workflow and it seems that on PIE, these instances will revert to showing the bone again.

Place a BP with a skeletal mesh component in the level.

In the BP's constructor, hide one of the skeletal mesh's bones.

Result: The BP's viewport hides the bone. Instances in the level do not hide the bone. Instances spawned during PIE hide the bone. 

Expected: All instances should hide the bone.