Hello I have an issue im unable to resolve so I come here hoping anyone have any clues on what could fix my issue ^^

When I type something in chat the msg is inverted (Example: olleH - This is what shows if I write Hello)
All plugins etc that prints text in chat is normal its just text typed by normal players that is affected.
I tried unloading betterchat and it resolved the problem but I want to use betterchat so wondering if anyone have any clue what it could be?

I don't think this plugin has anything to do with that. That sort of behavior happens when your cursor stays in place where you are typing, causing it to type inverted. Does it show that way on the client?

Cursor is not in place anywhere and when I write in chat without betterchat its working fine. 
The "inverted" text also shows in console as inverted. I have 1 working server and copied everything over to a new one to have a 2nd and this happens on the 2nd one. I have no clue what it can be :/