Hi, I was using Dark Theme for YouTube and suddenly it stopped working. I tought it might be an issue with the extension and youtube, so I unninstalled it and installed Magic Actions (a friend uses it and it works fine, I just asked) but I have the same problem.
It should be like this (Chrome):
But it work like this (Opera:
I already cleared cache and coockies. This problem started yesterday while I was watching youtube (from one video to another). I did not installed a single thing since weeks on the pc.
I'm using Windows 10.
And what the extensions authors say about it?
Hello I have the same problem on win. 8.1 with opera 47.0.2631.80.
Youtube introduced new skin(s) worldwide just recently.
So all youtube skin extensions needs to be updated.
But Utube now has dark skin without extensions. So remove your extension(s) and refresh page, and see the new settings menu.
If you have trouble getting the new skin you can try youtube.com/new