Please fix Dye-related bugs in "The Copper Age" game drop.

Hello
One of the changes in the upcoming game drop - The Copper Age - that has received less attention among the other content in this game drop is the change in dye textures. For this reason, I would like to ask that now that the dye changes have been made after several years, they should not be half-hearted and should be accompanied by other dye fixes. So, I think it's a good time to fix all the dye-related bugs reported in Mojira (some of which are actually quite easy to fix). We're still a few snapshots and several pre-releases away from the full release of this game drop, and I think there's time to fulfill this request.

Note: There has been indirect evidence over the years that Mojang wants to fix all of these issues in a future update, something along the lines of "World of Color Update 2.0", but hear me out: there's no need for all that patience and planning. Once you've made the effort to change the dye texture, you should be able to fix the rest of the dye problems. If you do, at least I'll be indebted to you.
Thank you in advance for reading (and hopefully implementing) my request.