This is one of the one-time promo pop-ups that this extension doesn’t work on*, and I find those annoying too. It will, however, hide nearly all Gemini-related menu items, commands, and search features.

* This is because when a web page creates an internal overlay, often it disables access to the content behind it in addition to covering it up. This means hiding the popup would make it impossible to use the page itself. This extension doesn’t use active code to be more trustworthy, so there’s not a good way to remove those pop-ups.

I’m still not able to reproduce this, and I would like to make sure it works for others! Can you please contact me (crx@pfish.zone) so I can figure out the problem?

Sorry that the extension doesn’t seem to be working for you. I can’t reproduce this issue; for example, when I open GMail, the little icon is hidden. Since many of the CSS changes we do are identical, I would either extension to work roughly as well as each other (though I think there are slight differences between what we catch; for instance they use a method of hiding the "summarize this file" menu item that is a little too fragile for my taste). Could it have been a matter of needing to refresh the page?

The Gemini buttons that appear in a new Google Doc unfortunately can’t easily be handled by either of us (i.e., the ones you see when you create a doc with https://docs.new); those are not HTML elements that can easily be hidden with CSS, and instead are drawn on the page as if they were images.