pyxoris
Volunteer Here!
The only explanation I have for this is your pack not being merged correctly, in the past, I did this wrong, and I had to remove every possible sighting of the modelengine pack, and re-merge it correctly, maybe you can try the same? Following the guides, I got everything working, nothing else besides the merging process should mess modelengine up I believe.
A few questions.
Did you follow the merging guides we have?
https://itemsadder.devs.beer/plugin-usage/merge-resourcepacks
Are you manually merging or using IA to merge it automatically?
Are are you using paper, or another .jar?
And this issue is only occurring for player above version 1.19.2, correct?
I haven't heard of something like that so far, so this would be rather unusual.
Sorry if these questions might seem tedious, just trying to rule out the obvious. 👍️
Thanks.