I think it is also happening on my regular streaming settings where the character is on default and modelstreamingbehavior is set to legacy but it happens much less often. Whereas here it happens every time.
I was able to fix my issue apparently I had a line where I wrote table.insert(promise, promises) instead of table.insert(promises, promise) and it was causing a race condition type of issue
So do you believe there is a engine issue, or was it a scripting problem on your end? I see you attached a repro place but we haven’t looked into it yet.