The question

Could be related to #396 as Trinkets renders a similar "fake" elytra on the player.

"Fake" armour pieces being vanilla armour models rendered in addition to the standard slots. The specific example from my use-case is armoured elytra mods that render a chestplate at the same time as an elytra - the "fake" chestplate doesn't change with CIT.

This used to work in CIT Resewn for Minecraft 1.18.x, but I've had difficulty testing more recent versions due to limited "armoured elytra" mods on compatible version with CIT Resewn. My current tests have been using Metal Wings for 1.21.x, and from what I can see, the ItemStack information is used when rendering the chestplate on the client, which I'm sure is what was originally required to get custom textures working. (I could be very wrong.)

I understand that CIT Resewn development has pretty much stopped for new versions since Mojang implemented some of the features into vanilla, but I'm playing on 1.21.1 and it's a shame that this previously working feature isn't available on this version of the game.

Checklist

• I checked the issues(both open and closed) and could not find a duplicate of my question