Playback controls missing from Android lock screen [solved]

[Orator]

I found another thread about the same issue from 2020, but it wasn't much help: https://www.aimp.ru/forum/index.php?topic=64806.0. Now here's the fix, as simple as it is: restart your phone!

Worked for me at least. This likely isn't mandatory after every AIMP update, but I'd assume that if there are some other recent system updates that affect the lock screen, it then may affect the AIMP too.

IT Crowd: "Did you try turning it off and on again?"
Me (proudly): "Yes, I did! And it worked!"