I was on the latest version (2024.11.2) and this issue still afflicted my Apple App Store installation. I followed BitWarden’s instructions here and it solved the problem. I did have to set all my prefs (including Close to menu bar, which I always have set) and the app is now quitting properly. I did not see this post and the replies until after I follow BW’s instructions, so unfortunately I don’t know if just unchecking Close to menu bar would have fixed it by itself.