JK Rowling wasn't seen in the Harry Potter reunion special 'Harry Potter 20th Anniversary: Return to Hogwarts', which was aired on January 1, 2022, and commemorated the film franchise's 20th anniversary. The author was only seen in the archival footage. Though her absence was speculated by many to be due to the controversy around her controversial comments, Rowling revealed in a recent podcast that she was asked to participate in the reunion, but chose not to appear in the same as she reasoned that the special episode was "about the films more than the books".
(With inputs from ANI)