CIT's are working on Item Models but not the actual Item Icons for some reason
The Netherite Sword & Shield should be showing an icon corresponding to the model but they aren't. This isn't just an issue with enchantment CITs, it happens with normal CITs as well

Modlist:

The mod "eating animation" has an incompatibility with CIT(both Resewn's and optifine's)

Alright, Thanks!