Yes, app switching bug if I can name it that way. When I fast switch between apps using bottom screen bar everything is OK. But after that when I quit that app only wallpaper is on my screen. No icons and widgets, nothing. If I use bottom screen bar to quit or lock and unlock screen everything is back to normal. This happens sometimes, sometimes no that bug.
After Android 13 upgrade I had 3 phone restarts and after about a day or two after restart my mobile network wouldn't work. Signal bar said that there was signal but nothing worked: no data or phone calls. Only phone restart helped. I am hoping that they at least fixed restarting and network drops.