Weird fetish fuel suddenly out of no where, no provocation and no explanation just for the creators gratification. I'm looking at you anime.
People having a really dumb fight about trivial things that basically overshadows their main objective such as saving the world from destruction or preventing their inevitable death.
Those stories with a loathsome character where at some point they cry a lot, bitch about how they're a troubled, tortured soul and that they need to change for the good god damn it! Then have everyone go "poor baby" and now this character is somehow likable now. People legitimately think this is how redemption arcs work.