I haven't played since last december, has strafing changed?

I just came back to WoW and I noticed all of my characters strafing is bugged. When I press q/e my character will run left/right but continues facing forward and my camera perspective is messed up and it is really awkward to change my characters direction.

If I delete my interface folder, the problem remains, if I delete my WTF folder, the problem is fixed. Spending 6 hours setting up every single addon is a bit much.

Anyone have any ideas as to what would cause this?

30 seconds after post i deleted the config.wtf file inside the WTF folder and that fixed it. much simpler to redo video settings than addons