This add-on has been a game changer. Can't imagine using YouTube without it. However there seems to have been a recent change where you are now being forced again to scroll through all your playlists just to save a video to specific list instead of being able to search keyword for the exact name of the playlist you wanted. Nor are we given the option to save the video to multiple playlists before closing the window. I'm not sure if the hiccup is on YouTube's end or not but am wondering when the issue may be resolved?

Edit: To the developer who answered thank you for the clear and quick response! The search function on playlists is definitely back and I appreciate it. Gosh I wish YouTube would learn from their goof ups over the years instead of doubling down on them. Anyways I will continue to use and support the success of this extension and your team who works hard on it. Hopefully one day Firefox may add a reply button to make messaging a little bit easier.