Didn't work for my use case. :( The reason I wanted this extension is to make my Tumbr tab stay named "Tumblr" instead of changing to "(3) Tumblr" etc every time I had some unread posts. Sadly this doesn't seem to work: initially the "(3) Tumblr" did become "Tumblr" when I renamed it, but then a few minutes later it became "(2) Tumblr" again after some unread posts appeared. Could you please make the tab-renaming persistent even if the website tries to change the tab title?