Character Controller moving by itself?

It started a couple months ago when I played the Standard Assets FPS Character Controller prefab into my scene.
Without changing anything the character always walks -45 degrees to the left. It’s killing me, I can’t advance with it doing this.
I know it’s the character controller not the prefab from Standard Assets because I wrote my own FPS Character and when I put the Character Controller in it breaks it again.


Edit: I downgraded to Unity 2017 1.0 and from that to Unity 5.6.4 and both have the same problem.

Fix: In the InputManager I deleted the 2nd “Horizontal” and “Vertical” Axes. No clue why that worked but hell, that took me so long.