Hi ,
I’ve tried this in a blank project with just some test blueprints which were mostly empty, and they seemed to spawn just fine. The issue seems to occur with specific actors, two that I know about so far that share a common inheritance ancestor. There may well be others but it’s difficult to progress in the game currently - I can try and set something up to check out other actors that also share that root ancestor (or not) if that would be helpful?
Also, these actors do indeed work fine in PIE.