Whedon was part of the investigation related to Ray Fisher's allegations about the activities of Whedon (and Johns and Berg) related to the filming of Justice League after Zach Snyder left. WB recently said that they completed their investigation and took remedial action. In a movie that no one is sure is coincidental, Whedon stepped down off of the show he created for HBO Max (a division of WB) called THE NEVERS, citing exhaustion. This was the only investigation I was aware of, although Whedon revealed obliquely some bad behavior after his wife split from him and made accusations against him, IIRC, so I suppose its possible there's more than one investigation going on into his activities.