Topic: Why doesn't mobile indicate when you've upvoted a pic?

I swear this site's mobile mode used to indicate, when looking at a tag, which of these images you upvoted or downvoted. Is there a setting to bring that back?

I don't believe that this has ever been a feature on e621. the thumbnails for posts do not contain the attributes that would make this possible.

the only thing close would be highlighting favorited posts, but that's not a default feature either.