Adds an RSS feed button to YouTube channels next to the subscribe button
< YouTube RSS Feedについてのフィードバック
That is correct. That type of youtube account doesn't have a RSS feed, unfortunately.
Not a bug with the script. Limited functionality with YouTube itself.
don't work with YT /channel/ urls ?
Seems like there is a bug, script not working with *youtube.com/channel/* URLs ? I'm use FF + GM.