A widespread bug is affecting YouTube Music on iOS, causing the app to display a black screen and preventing users from playing songs. The issue appears to be limited to certain Google Accounts and is not resolved by uninstalling and reinstalling the app. Additionally, some users are experiencing replaced next/previous buttons, which may be useful for podcasts but are inconvenient for music playback. The issue is believed to be server-side, since the latest app update was released over the weekend. Until a fix is released, users may be able to listen with ads using another account, but their YouTube Premium subscription and library will remain inaccessible.