Raycasting in parallel on a worldmodel crashes studio

Bug Reports Engine Bugs
#1

Just as the title describes, raycasting on a worldmodel in parallel crashes studio, even only with 2 actors and 1 baseparts in the worldmodel
It doesn’t appear to crash if there’s only one actor

WorldmodelParallelRaycastRepo.rbxl (46.0 KB)

#2

Thanks for the repro. We’ll take a look.

#3

A bit of a necro-bump, but I ran into this independently today. I was able to find a workaround, and that was to yield for at least one physics frame after parenting the WorldModel. Even if it’s parented on PreSimulation and you wait until PostSimulation fires, you’re good.