Vivaldi displays the extension button in the wrong place

[ghost]

I'm not really sure what would be causing this, but this is the only extension it's happening for. Even though everything works fine in Chromium, in Vivaldi, the extension's button appears inside the URL bar instead of with the rest of the extension buttons. Additionally the option to hide it does nothing. This actually appears to have been caused by a bug in Vivaldi with the Extensions Toggle option in the address bar settings. I believe a recent change to Chromium upstream broke this functionality. I really love being able to right click on links to mkv files and open them with mpv in one click but I really don't want that button cluttering up my interface even more than it already is.

Below is a screenshot of the odd phenomenon, along with a bunch of other extensions so you can see what I expect it to look like.