Try to remember if you have installed an application these last weeks. Maybe this cause the problem. Also if you're using Good Lock's lock star apk check your lock screen wallpaper setup or uninstall it.Thanks, so i don't know what is the problem. I hoped was Android 10
i noted that my s10 cant display video wallpaper on lock screen at least from 1 week.
did it happen someone else?
That issue has disappeared after upgraded firmware and then restored my backup
./adb shell wm overscan 0,0,0,-42