Harbour's Breakdown: Stranger Things Co-Star Rift Exposed

David Harbour has broken his silence regarding significant on-set tensions with his young co-star, Millie Bobby Brown, during the filming of Netflix's Stranger Things. These professional frictions reportedly escalated when Brown filed a formal harassment and bullying complaint against Harbour in November 2025. While the complaint excluded sexual allegations, the hostile atmosphere took a toll, leading to an internal corporate inquiry that spanned several months. Harbour described the situation as a "rupture-and-repair thing" that was resolved after direct communication between the two stars.

The intense workplace dispute coincided with personal struggles for Harbour, including the collapse of his marriage. The cumulative stress ultimately led to a severe emotional breakdown, causing him to miss the show's wrap celebrations. He has since spoken openly about his battles with depression and mania, feeling "ashamed" of his behavior. Despite the past conflict, Harbour and Brown have publicly showcased a strong, collaborative relationship, with Harbour expressing deep devotion to his co-star.