(This issue first appeared in 18w07a when tridents and their models were added)
The right and left spikes of the trident cannot be independently retextured from one another, making them always look the same, limiting the player's resource pack creativity.

Steps to Reproduce:

1. Download and apply the following resource pack:
   Trident.zip
2. Get a trident and either hold it or throw it at a translucent/transparent block

Observed Behavior:

The right and left spikes will both look entirely red, despite the player seemingly only modifying one spike in the UV map.

Expected Result:

Only one of the spikes would be altered, since that is what the player intended to change. The current behavior is unexpected and not resource pack friendly.

Screenshots/Videos:

Notes:

Related independent retexture issues:
MC-271355 MC-271384 MC-271383 MC-271368 MC-271363 MC-271357 MC-271355 MC-271354 MC-271330 MC-271305 MC-271304 MC-271232 MC-264571 MC-270516 MC-270517 MC-145334 MC-265343 MC-265345 MC-270530 MC-271767 MC-271768 MC-271769 MC-271770 MC-271773 MC-271780 MC-271982 MC-271988 MC-271989 MC-271990
Related trident model/texture issues:
MC-267291 MC-267301