Sims 4 CAS cursor glitch

Im on Mac and I just installed vampires to my game (Not sure if this has anything to do with the bug), and every time I go into CAS, even if I'm editing a pre-made sim, my cursor glitches. Even if my cursor is at the top of the screen or the bottom, if I hold down and drag it will highlight a random body part and make me change it. Its like when you change a sim's facial feature, and you click on it and highlight it, hold and drag to move it where you want, and it changes the shape/size. But with this glitch even if I didn't go anywhere near a facial feature or body part with my cursor, it will highlight a random one and move it anyway. It's really frustrating when trying to rotate the sim or change one's features to my liking, and I haven't been able to make a vampire yet! HELP! (Btw, I have tried with CC off and it still happens, and I have no cursor issues outside of sims 4 CAS, and have never had any before installing vampires.)