When I leave The End either by using the portal or dying, I spawn just fine in the overworld but it's inactive, chunks won't load, NPCs don't move, and I can't access things like chests or the bed. It appears it is causing the internal server to crash. When the game is exited and restarted, it is rolled back and the player is still in The End.

This is not the same issue as MC-63590 "Watchdog shuts down server" because there is no substantial lag spike when returning to the overworld. It loads quickly same as ever.

This bug occurs specifically in version 1.13.1. It does not occur in versions 1.13.1 pre-1 or 1.13.1 pre-10, nor their server.jar variants. I have not yet tested it in 1.13.1 server.