Kalshi is facing a class-action lawsuit over approximately $54 million in disputed payouts tied to bets on Iranian Supreme Leader Ali Khamenei's resignation. The plaintiffs claim the prediction market platform failed to settle contracts properly and failed to distribute expected bonuses. CEO Tarek Mansour emphasized the company's stance against profiting from death-related events and pledged to refund fees. The dispute raises concerns about operational and ethical issues in the prediction market sector, particularly regarding sensitive geopolitical events.