My '21 MSLR routinely "chooses" whether to run a 4-way stop, that also has flashing red lights, at a major intersection on a loop that runs around the town closest to where I live. Sometimes it'll stop and do a great job. However, about 75% of the time, the car, at 60mph will simply ignore the lights and stop signs and go barreling up to the intersection where I have to slam on the brakes. I've videoed this, did the voice recording to Tesla, etc., and it doesn't matter. With no "direct" way to report major events, errors and dangerous situations directly to Tesla Engineers there is absolutely nothing that can be done. That's why the updates and odd things the cars do is so frustrating. The Tesla Engineers simply work at their own pace to send updates/fixes while all of us, the end-users, are left wondering if our particular issue will get fixed or not. And this comes with the requisite problem of being constantly on guard when driving because you just never know what sort of bizarre thing the car will do next. This makes driving the Tesla more stressful than driving almost anything else I've owned.
Now, with the latest update, my car has failed to bias to the right side of the lane on the two-lane, unmarked country roads that I live on. Unlike the previous release where the car "built" a non-existent centerline, this release simply chooses the entirety of the road, centers between the dirt on either side and treats it as a "lane" instead of a two-lane road. This includes going over small, blind hills in the middle of the road and, twice now, treating oncoming cars as a confusing threat that it cannot "compute" and it weaves back and forth then "quits" and simply stops in the middle of the road.
This has been less frustrating and dangerous than the car's tendency to use EVERY left turn access lane as a "#1 lane" on our local highway. This highway has a 70mph speed limit and the last two times I've driven up/down the highway the car has chosen, almost every single time, while traveling at 75mph to get into the left turn lane instead of maintaining the appropriate lane of travel, which in this case would be lane #1 of 2.
Again, I have recorded on video (with no one at Tesla to send this to), I have had to slam on the brakes, I have let the car "figure it out" and the car simply stopped abruptly in the turn lane(s), unable to figure out what to do, and I have sent the voice recording to Tesla. I hope there is SOME FIX coming soon because in my year and a half of having this car, this is the worst the car has performed.