Here are the Lock Screen and Now Bar Bugs that I found in One UI 7 and 8.
First, The animation when you open the media player is delayed on the Galaxy A series which depends on the resolution and content of your wallpaper. Also if tap the media player and it moves the opening animations feels off and when you closes the media output on the now bar, there is a skip on the animation. (Not in the video since I forgot to put that)
Second, when you tap the media player and quickly close, the album cover and the track title still appear for a second and after that it disappear.
Third, which only effect on phones that doesn't support real time blur (mainly A series), when you tap the clock and swipe down to the notification or quick panel at the same time, if you close the clock info (which was the lock screen widget carousel on One UI 3-6), it removes the static blur on both the panels and the only way to revert it back is to simply swipe up which changes the opacity of the blurred screenshot.
(sorry about my grammar since this is my first Reddit post)
Device: Galaxy A35 5G