The famous, tempestuous love affair between Greta Garbo and John Gilbert began while they were filming this movie.
According to Barry Paris's commentary on the 2005 DVD release, Garbo initially refused to do this film, which was scheduled for production immediately following her last picture, and also not long after the death of her sister from cancer. MGM sent her a sternly worded telegram, and she capitulated.
MGM denied Greta Garbo's request for bereavement leave to attend the funeral of her sister in Sweden. Garbo reluctantly continued production after rumors of deportation arose if she refused to work.
The film was such a commercial success for MGM Studios and such a breakout film for Greta Garbo, that she was considered 12% of the entire studio's value by 1927.