Article continues below advertisementSomething strange - and potentially illegal - occurred on the set of Stranger Things.According to a new report, Millie Bobby Brown filed a "harassment and bullying" claim against costar David Harbour, which included "claims of sexual impropriety."The 21-year-old submitted the complaint ahead of shooting the series' fifth and final season in January 2024.Article continues below advertisementSource: MEGAMillie Bobby Brown filed a complaint against David Harbour."There were pages and pages of accusations," a source told an outlet.