Please read the guide for contributing before posting.

Minecraft version: 1.12.2
Wizardry version: 4.3.4
Environment: Singleplayer/Server

Issue details: Armourer's Workshop has a arm override feature to change player models and it is incompatible with your player animations specifically when arm is over ridden it makes weapons and tools items ect. be held through the chest instead of in the hand where it should be. turning animations off in your config file resolves the issue. hopefully a fix can happen.

Other mods involved: Armourer's Workshop
https://www.curseforge.com/minecraft/mc-mods/armourers-workshop/files

Okay I'll look into this at some point, thanks for reporting.