Do you mean the pixel-bug again or do you mean, that they aren't transformed the right way?
I didn't transform the left hand yet (I don't support it right now, this will come later on)

Crossbows do not have proper rendering when held in the main hand, as with the nest of bees.

Also, crossbows cannot be fired in creative.

Which Minecraft version are you using?

1.11.2 - 13.20.0.2304

That's odd, for me everything works fine... Did you accidently use the deobf-version?

I used the build provided on curseforge. Strange.

Could you try again and look? :D If the issue isn't there anymore, I close this one :)

I'll check in a bit, I'm trying to fix some things with my own mod, ironically. Porting straight from 1.10.2 to 1.11.2 caused some hiccups.

Take your time :) Good luck tho ^^

It looks like they can be fired again in creative and what not, but some of the first person animations for reloading stuff is off in general.

Okay, yeah. I know about that issue, but it is nearly impossible to fix, because the item transform helper can't transform my reloading stuff... :/
Maybe later on, when it works. :)