Something is wrong with the background play of the YouTube Premium app. It allows you to send a new video to the background once. If you maximize it and try to send it to the background again, it just stops playing. Sometimes, it does not even work at all.
I keep getting high system resource on my s25 ultra and it wants me to put the app to sleep cuz it's using too much system resources which is weird I don't know why it's doing that using too much battery
