• Server version: 1.12.2
• OldCombatMechanics version: 1.6.3
• Server log file: https://hastebin.com/zoqixesaxi
• OldCombatMechanics config file: https://hastebin.com/wuhapakoge.bash

Once you wear armor, it's just stuck onto you. You can't take it off unless if you're opped or in creative mode.
https://www.youtube.com/watch?v=F_0fFbb3HZw&feature=youtu.be

I have found a fix, closing.
the fix was to remove ItemFixer