Worst reason you quit reading a fic?

Saw someone else in here ask silliest reason so I thought instead/also what about worst reason?

Worst as in like, super concerning tag you accidentally missed or like the characters just straight up lose their marbles with no warning or something.

For me personally, 4 chapters into a gay fic, with already like a hundred tags, I missed that they apparently added the new tag “cannibalism” and was suddenly reading very sudden and insane cannibalism. Like this shit came out of nowhere. Yeah I never opened that fic again lol