♾ Looping Bug; Stuck inside The End City Portal

Discovered a major Bug when trying to use the End City Portal to enter the End City. Once I threw an Ender Pearl into the Portal, my screen went purple and it showed that my coordinates were bouncing in between the Portal. I couldn’t move, mine, or do anything. Ultimately I was forced to exit out of the world an Turn On “immediate respawn”. Lost a lot of items and levels because of this bug. I still haven’t been able to successfully go through the Portal.