Just as what the subject says, I had problems getting my elytra to render in-game. Both dyed versions and the default elytra weren't working until I disabled the option to dye them. I'm on the latest version (1.5-130) and I'm running forge 1.12.2-14.23.4.2750 with a bunch of other mods but I don't know if any of them would conflict with quark and cause this issue.

Forget it, I figured it out. It was friggin Optifine. 🤦‍♂️