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it was supposed to work for everything. I'll look into it.
It is working. Do tell where you are encountering the problem and what settings did you set in the script.
They may stop working if you switch page to page fast as then the site sees you as a bot stealing stuff and blocks the script's attempts to open galleries in the background for tags retrieval.
I tried on the default search "front page", watched and favorites.
Attached some prints for you.
It is working for me, perhaps give me a screenshot of the developer console?
I just tried installing it on chrome and it worked.
Can you try using the latest firefox on your computer to see if it works?
Nevermind. I realized it only works for single-word tags.
Can you enable the gallery highlights for the thumbnail mode?
It's only working for the extended mode.