Bug: controls messed up due to 'use controller' checked

I had some hard first 20 minutes with the game.
Sometimes, the camera went everywhere, In the personnel screen, the soldiers kept rotating.
I was sometimes unable to select ‘explore’ on geoscape. Really weird stuff.

Finally figured out that I had to deselect ‘use controller’ in the options.
Perhaps its not smart to have this on as default for PC?
Nearly tossed this game out.

Now I can finally play the game.