This isn't a hardware defect or a broken install. It's just mediocre software, nothing more. This isn't even that glitchy. All those things don't usually happen at once, although they are recurring - including for friends on different device generations, ruling out unlucky hardware and moon rays.
As mentioned, they are reproduced on devices of friends of different generations, and my earlier devices were no saints either.
Plus, remember the debugging manual: When software bugs out, it's safe to assume it's always the software that's broken. Suspicion of kernel, compiler or hardware faults come after the software has been proven free of fault (which you can't reasonably do without source access).
That eliminates...nearly all software ever created. Good luck out there
HN should know that "works for me" is not a good answer to an issue report...