The bug

On a server, when teleporting far in the end dimension, the game tries to generate all the region files that are between the current location and the location that the player teleported to.
Those region files are empty, but generating large amounts of files crashes the server.

How to reproduce

1. Open a java server, teleport to the end.
2. Teleport to a really far location (300,000X 100Y 300,000Z for example)