Hey I dont get a reply after the first text but I also found a bug with the zoom feature.
If you look as far as you can go downwards and zoom in your screen shakes and if you let go you can look behind you but its upside down aswell you can fix it by pulling your mouse down as far as you can go and zooming in and when the screen shakes you let go and your back to normal, its a repeated process and it occurs occasionally when your least expecting it. Which is what I have found out from this.
Have a great day!