Drop a sk in the level
Set the sk component Optimization->RenderStatic to true
Right click the sk in the level and select conver to staticmesh
Select a content location
RESULT: Engine crash because it expect the component::MeshObject to be a FSkeletalMeshObjectCPUSkin but because of RenderStatic it is a FSkeletalMeshObjectStatic
There's no existing public thread on this issue, so head over to AnswerHub just mention UE-95205 in the post.