When viewing a user's or group's gallery, the quick hide icon is only displayed for the thumbnails that are initially loaded when the page is first rendered.
However, large galleries automatically inject more thumbnails as you scroll down the page, and those thumbnails do not have the quick hide icon available.
The content script should be updated to watch for thumbnails on gallery pages and handle them as it does on Browse pages.
When viewing a user's or group's gallery, the quick hide icon is only displayed for the thumbnails that are initially loaded when the page is first rendered.
However, large galleries automatically inject more thumbnails as you scroll down the page, and those thumbnails do not have the quick hide icon available.
The content script should be updated to watch for thumbnails on gallery pages and handle them as it does on Browse pages.