First bug: involving the ATV. It will hurt me randomly when getting on it to drive kind of like it's bucking me off it after having parked for a while. Usually happens whenever I park it in the garage only, either backing it up and putting the hand brake on, or parking outside still with break to not have it roll out and then picking it up with E and bringing it into the garage. It hasn't killed me yet but is getting annoying cleaning up the blood every time. Don't know if the ATV is clipping into the ground or something and just hitting me, and I had even picked it up before getting on it but would still get bucked off so I don't know.
Second bug: Still with the ATV. Only happened once so far but for some reason I was not able to interact with the ATV at all. I was still able to see the durability of the tires but was not able to pick it up, or get on it at all for some reason. After a little while the ATV teleported to the center of the garage and was able to interact with it again.
ATV upgrades (if they somehow cause the bugs) are: Big Headlights, Container, Overcharged Engine, Map
the ATV bugs didn't happen until I had gotten the Map upgrade or the Overcharged Engine upgrade I think, hell it might have started happening only when I got both on it.