I wonder how many fewer posts we'd have on our forum if most people would perform a reset as a first-step before coming here to talk about issues with a new update?
I'm not saying that to be a wise guy. It's just whenever I run into a software bug like the many reported here for 2.9.0—particularly those common bugs that have been reported over and over by others for months with earlier updates—I always try a quick reset. Either a logo or a nuke.
After updates, the car needs to do a full reboot, and as we have known for many years, the reboot sequence for the Air is a bit of a crap shoot, due to the sheer number of processors that have to boot in a very specific sequence in order for everything to function correctly. It's a design flaw in the car, and there's not much that can be done about it without a massive hardware change on Lucid's part. So it's unfortunately going to be with us for as long as we own our cars.
I've come to refer to this phenomenon of random bugs after reboot as my car "waking up on the wrong side of the bed." A reset almost always cures it. So I start there. If all is well post reboot, I move on with my day and quickly forget it ever happened.
I honestly don't run into this a lot, anyway, and a quick reset saves me from being mad at my car for several days, or thinking there's some massive new problem when more likely it's just a symptom of the reboot sequence having gotten out of whack.
If the issue does NOT go away after a reset, or the reset is required many more times in a row, then I might consider it a real problem and report it here.
Should we have to deal with problems like this? Absolutely not. But I do think it's worth accepting some of the known limitations of the car and considering issues like the reboot sequence could very well explain a lot of what folks here think are introductions of new bugs in other systems.
That's not to say new updates don't sometimes cause regressions or new bugs. Just that much of what might appear to be a new problem could very well be just a new manifestation of a very old, unfixable problem.
Food for thought, anyway.