The most talked-about Stranger Things moment as the final season approaches has nothing to do with the Upside Down or Vecna or even Running Up That Hill. No, it's something no one has even seen! According to a bombshell report, star Millie Bobby Brown filed a complaint against onscreen foster dad David Harbour at some point before filming on the final season began. A source claimed there were "pages and pages of accusations" of bullying and harassment, generating a months-long inquiry by Netflix.