yups the symptom is a race condition. i’m trying to figure out why it triggers.
apparently that code can handle being called from other threads, but it’s failing a check for race conditions.
i think the problem is on whatever code is subscribed to your delegate.
because i don’t see an issue with the MoveTemp(TArary)
and being on the gamethread dispatching a delegate should be fine.
i’ve dispatched delegates on bg threads so that’s fine.
what confuses me is that being on the main thread you "shouldn’t"
have issues like those.
try disconnecting everything from the delegate and see if that works. then try again.
my another guess is that “CallBackObj” is a custom object that somehow is getting auto-destroyed when the lambda finishes. and possibly from another thread.
but i would have expected a much longer stack trace if that were the case and a segfault not a race condition. but chances are that object could be doing something weird.