Nice, dann sag mal “Hallo” zu den anderen deutschen Entwicklern: https://forums.unrealengine/showthread.php?414-German-Developers 
Yep, I got it and I’m currently trying out some stuff, but I cant find anything that could be wrong -> but I try to recreate the problem in blender with one of my chars
-make sure that the rigg has the same size in pose and animation mode
-are your vertex groups correct? -> so are all vertices from the cloth part assigned to the bone
-connect it to another bone and try it again