I would never expect a browser extension to work flawlessly with every possible site out there.
You are the user of the extension. Does it break a site? Submit a patch to the extension! Certainly don't complain to the website author who has no control over what extensions you personally use.
You are the user of the extension. Does it break a site? Submit a patch to the extension! Certainly don't complain to the website author who has no control over what extensions you personally use.