New YouTube Rated 3 out of 5 stars

Excellent extension but not matching with new YouTube Interface .. when you plan to fix that?

This review is for a previous version of the add-on (1.4.10). 

It should work, I've added support for the new interface a few months ago. If it doesn't work for you, send an email to deadline.support@gmail.com with more information.

If you wanted a tab instead of a button to match the new interface, the answer is I decided to stick with the button because it's more compact and easier to use - but that may change in a future version.