Not sure if its because my monitor is an ultrawide, but i noticed that the calibration of the curser is a bit off. its like the area for the curser is squished to the middle of the playable screen. the left side of the screen i have to go further right and the right side of the screen i have to go further left. once i do get to set it to window mode it does calibrate back to normal. but yea fullscreen, on my ultrawide acts real funny.
here is a collection of what i mean