Good to know, I can wait, will play with different stuff.
Crash is for sure when i try to compile blueprint with another blueprint as child actor.
Even with sockets, still double child blueprints, and attached to root, like sockets were on root not on mesh that i just made them for.
And another “maybe bug” maybe me not knowing stuff yet: when i get all socket names result is “static_mesh_socket_1” instead of what i named it ie. “left_1” etc.