Hi.
Have you found a workaround that resolves the error?
→ Yes, by ether set TickInterval of AIController to 0.0 or completely avoid to use ReceiveTick event in AIController blueprint.
Do you have steps I can take to reproduce this on my end?
→ No. Unfortunately.
Is the AI spawning in the sublevel or is it in the persistent level?
→ AI was spawning in sublevels.