Crash Log

This is similar to the datapack error I posted a bit ago. Unloading and deleting a world then creating a new one crashes.

Ars 5.8.6

Are there other steps to recreate this? I can't reproduce it in a clean instance, and the crash report is pretty weird, as if something was concurrently modifying that list.

I think its related to integrated server shenanigans, added some checks and tweaks that should prevent that. Otherwise this looks like a rare race condition.