As a result, I'm mostly using this selectively so far, and I wouldn't want it turned on by default for every PR.
This is why the FBI can compel Microsoft to provide the keys. It's possible, perhaps even likely, that the suspect didn't even know they had an encrypted laptop. Journalists love the "Microsoft gave" framing because it makes Microsoft sound like they're handing these out because they like the cops, but that's not how it works. If your company has data that the police want and they can get a warrant, you have no choice but to give it to them.
This makes the privacy purists angry, but in my opinion it's the reasonable default for the average computer user. It protects their data in the event that someone steals the laptop, but still allows them to recover their own data later from the hard drive.
Any power users who prefer their own key management should follow the steps to enable Bitlocker without uploading keys to a connected Microsoft account.
As time goes on Windows is going to be smaller piece of this pie and I suspect Microsoft will move it over to a subscription service or you will just have like 1000 ads shoved in your face. I made the move over to Linux last year and Windows will have to live in a VM.
Deltas are just an implementation detail, and thinking of Git as diffing is specifically shunned in introductions to Git versioning.
I had a similar problem at one point, then finally figured out it was when I accidentally hit the fn button which triggered the emoji picker window and moved focus to it (IIRC), but it was off-screen because I'd previously used it on a secondary monitor. Reconnecting the monitor and moving the window back to my primary display fixed it. (Obviously, it's a bug to show a picker window outside of visible coordinates, and I think it got fixed eventually.)
But it also might not be Apple at all, if it's some third-party background utility with a bug. E.g. if that were happening to me, my first thought would be that it might be a Logitech bug or a Karabiner-Elements bug. Uninstalling any non-Apple background processes or utilities seems like a necessary first step.