My original Pixel just had this exact issue after updating apps from the Play Store.... so I factory reset it and problem solved, UNTIL I updated a majority (38) of the same apps again after the reset. What fixed the problem was resetting the app preferences for all apps, by going into the apps settings>all apps>3 dots upper right>reset all app preferences. I'm going on memory here though, that was on Android 10 so the directions might not be exact, but they should get you there.... I hope it helps someone
I also wanted to add my double tap to wake and lift to wake weren't working either... but resetting all app preferences fixed those as well.