Warner Bros. is actually coming off its best year at the box office ever in 2018, thanks mostly to #1 billion dollar baby Aquaman, but also to its #2 film, Fantastic Beasts: The Crimes of Grindelwald. But they have to know that, even with $648,820,988 worldwide, Grindelwald could and should have done better at the box office and with fan/critic responses.
Article source: https://www.cinemablend.com/news/2465439/why-fantastic-beasts-3-filming-was-delayed-by-several-months