During the filming of 'Knuckle,' actors Jonathan Majors and JC Kilcoyne fell through a six-foot glass window, sustaining injuries. The incident was reportedly caused by an unsecured sheet of tempered glass, which was meant to shatter during a stunt that did not involve the actors. Following the fall, Kilcoyne required stitches for his injuries. Crew members quickly attended to the actors, with voices on set confirming they were 'good.' Majors, who is also an executive producer for the film under his Tall Street Productions banner, was heard asking if the scene was filmed. The production faced challenges as members of the International Alliance of Theatrical Stage Employees (IATSE) went on strike over labor-related issues, prompting some crew members to walk off the set. Despite this, reports indicate that filming is continuing, with producers seeking replacement crew members. Directed by Kyle Rankin, 'Knuckle' is described as an action film focused on American fighters responding to threats.