The chaotic filming of Casablanca was only one reason why Humphrey Bogart wasn’t in a happy place in 1942. Another reason was that his marriage to Mayo Methot was foundering on the rocks so badly they were known around Los Angeles as “the Battling Bogarts. But I’m sure the necessity of his wearing three-inch wooden platforms didn’t help his mood. His co-star, Ingrid Bergman, was five foot nine, so several inches needed to be added to his stature because having a Hollywood hero shorter than his leading lady broke every rule in the Hollywood Myth-making rule book.
See also my novel set against the making of Casablanca: ALL THE GIN JOINTS – a novel of World War II Hollywood.