Controller cursor snapping to various UI elements

[Iamnuff]

I'm playing this game with an xbox controller. Prior to today, when I moved the left stick in a menu it just dragged the square cursor-thing around like a mouse. It was kinda slow but at least I could click on whatever I wanted to .

Now when I move the thumbstick, it tries to instantly snap to the nearest UI element. (main-menu options, clothing slots in the character tab, ect)
This makes it pretty hard to select the UI element that I actually WANT to click on.

I thought it was caused by a mod at first (i did install a couple of new ones between my last session and now) but I've disabled all mods and it's still doing it.

Does anybody have any solution to this?

Edit: For some reason I can control the cursor freely... with the RIGHT thumbstick.
What? I don't understand why it's doing this.
Also, it keeps flickering between showing xbox prompts and showing kb/m prompts in the bottom right.