So, if you put leather armor on an armor stand, whether it's dyed, or regular, it TURNS WHITE, but if you remove it/take the armor back from the armor stand, it turns back to the way it was. If you decide to wear it yourself, it's fine. It's still the same color, ONLY IF YOU WEAR IT, NOT THE ARMOR STAND. This is OBVIOUSLY a visual glitch.  How I knew about this? Well, since I'll admit that I'm pretty good at command blocks and made a working mirror THAT INVOLVES AN ARMOR STAND WITH DYED LEATHER ARMOR, when I updated to 12.0.0, y'know what happened...   d-do i even have 2 say it? Yes? Ok. it turned white, so all the time that i spent using that cauldron to dye it was completely pointless. plz fix this. thx.