Camera not controlling right

I hadn't updated my game in months and have been playing offline until a few days ago when I went through and updated all my mods. I'm on the latest version and for some reason my camera is controlling like the Sims 4 cam no matter what. I only play with the Sims 3 cam, I can't stand the 4 cam controls. I do not have any mods that would change my camera controls and I'm just very annoyed and confused. Right click moves like edge scrolling and the middle mouse rotates. Left click does nothing, never had a camera control like that before wtf