Doesn't work on videos opened in new tabs. EDIT: I don't know what kind of example you want. Just go to youtube and open any video with a wheel click or with right click -> open link in new tab, the annotations won't be disabled.
I don't bother signing in to youtube anymore and I don't allow cookies from them either, and that means that every time I watch a video, all the settings go back to default, which puts the annotations back on. They are always annoying and irrelevant and I got sick of having to turn them off repeatedly. This add-on eliminates the annotations and makes watching a youtube video tolerable once again. If you want to get rid of annotations, this is a very simple add-on and it works. A big thank you to the developer.