If you equip any trinket, literally any it just duplicates the same trinket and places it in every single slot in the inventory, it is not compatible with "cosmetic armor" a mod ported by its own developer from forge to fabric, it works in forge but in fabric having to rely on "trinkets" its a completely useless mod, the same with "glass armor", its highly unstable too and impossible to use in creative mod

This issue is partially about other mods, and partially references the vanilla creative desyncs which already have other tracking bugs so I'm going to close this one as a duplicate.