Can't access ChildComponents when packed

Hello and thanks for your time,

the game is working as expected if I use “Play from editor” or “Standalone”. If I pack my project, the list of warnings after cooking warns that it cant find any child actor components (custom warning). If I start the binary the meshes of the child actor components are there, I just cant access them. With I can’t access them I mean “Get Children Components [x] Include all Descendants” and “Get All Child Actors [x] Descendants” returns an empty array. The functions above are called on “DefaultSceneRoot” and “self”. The children I want are ChildActorComponents, but I cant even finde the BoxCollision Components.