He tried to force a lady to do a nude scene.
According to BoundingIntoComics:
As reported by The Daily Beast, Greer claims she was offered a small role in HBO series True Detective but was abruptly fired when she refused to do a topless scene, which she asserts violated an alleged ‘no nudity’ clause in her contract.
Further, Greer says that Fukunaga treated her as a contrivance on the set of True Detective when she refused to strip naked, which led her to engage “in a tense 10-minute standoff with the director, who she claims tried every bargaining tactic he could think of to convince her to agree to the nudity.”
While this particular event allegedly took place 8 years ago, Greer only recently decided to openly accuse Fukunaga in response to a recent interview given by the director in which he discussed how he attempted to steer the James Bond franchise into a “post-MeToo” era.