If the player is fighting the enderdragon and happens to have any of the enderdragon's harming area effect clouds in the particle render distance and then unloads the chunk (via dying), and then re-entering the end, given that the particle effect is in the render distance from the spawn point of said dimension, the particle will briefly render on all of the XZ plane from the y coordinate it existed in.

Steps to reproduce
1. Enter the end.
2. Get the enderdragon to shoot a fireball at you
3. Die or unload the game when the area affect cloud is rendering.
4. Reload end.
Result
The particle effect from the dragon fireball harming area will render almost everywhere on the y level it was unloaded in.

Visual evidence will be applied soon.