I have been using YouTube Music a lot lately, but one annoying thing about it is that it is really just a Chrome app. If you are used to desktop players such as NetEase Cloud Music, where clicking the close button just hides the app, closing the YouTube Music window can be a painful mistake.
So I wrote a very small Chrome extension that injects some code into the YouTube Music page to help prevent accidental closure.
Download:
https://chrome.google.com/webstore/detail/jmbefokklnmcljplonbibpiakiphbfag