Hi DasMatze,
I’m trying to investigate the problem, but unfortunately I’m unable to reproduce it. Could you help me with this?
It would be great if you could execute QAGame Editor, reproduce the bug on empty map i.e. try to build lighting and afterwards send me the contents of UnrealSwarm cache directory? It should be located in \UE4\Engine\Saved\Swarm.
Thanks,
Jarek