To experience the lesser issue, sit in the driver seat of any road vehicle in game, park up facing a distant tree and roll the characters head. Compare this in real life and observe that the horizon of the earth should stay flat and trees stays upright. Your car and your body are still vertical also because only your head has rolled to an angle.
The view which is being presented in game is currently as if you are standing tall with your body rigid and have fallen over left or right, like a tree that has been axed and is falling over.