Google recently confirmed that Android 11’s lock screen will not display album art when playing music on your device. The feature is one of many changes made to the new operating system, and in this case, that particularly affect media playback.
Previously, album artwork was displayed across the lock screen, and Android 10 adds a nice blur effect to contrast all notifications that came in. The artwork would change as you worked your way through your playlist and return to your personal lock screen wallpaper when you were not playing music.
Originally, there was an error report on Google’s Issue Tracker claiming that the album lock art would disappear if the face unlock feature was enabled. Google simply responded with “We no longer show album art on the lock screen in R”, given that the album artwork’s appearance (rather than its disappearance) was faulty and that it has “fixed” it in a future building.
The user’s response to the removal of the album art for Android 11 / R is divided. Some are annoyed by the lack of an explanation for this change at the end of the Android team; others did not like how it hid the wallpaper they chose, especially since many media apps did not offer any settings to disable it.
Source: Google via 9to5Google