When interacting with any armor other than leather on a cauldron filled with dyed water (same way when dyeing leather armor) it consumes some of the water in the cauldron.
Linked issues
is duplicated by 2
Comments 6
Can confirm in 26.10.25 Preview.
Since 26.10.25 Preview, also the subtitle when trying to dye general non-leather armor, non-leather horse armor or elytra in a dyed water cauldron without success is “Leather armor gets dyed.” This also makes absolutely no sense to any non-leather armor.
For now, I have currently covered this incorrect subtitle in MCPE-233116 . That incorrect subtitle is related to the buggy behaviour with armor and a dyed water cauldron.
This bug also works with elytra. This bug could be even taken advantage of with elytra to have actual dyed elytra.
https://feedback.minecraft.net/hc/en-us/community/posts/360017741471-Dyed-elytra