To recreate the foggy British atmosphere on the set, the crew used a mixture which was vaporized over the place, but became rapidly laxative. As a result, half of the crew got diarrhea after breathing and swallowing the artificial fog.
The Catholic Legion of Decency condemned the film for its "glamorization of immorality and licentiousness", and it demanded the studio (20th Century-Fox) make changes so the film would be removed from their '"Condemned" list. The studio defiantly refused, initially, but when the actual boycotts began to occur, it caved in. During a period of about two months, Fox and representatives of the Legion of Decency discussed how the film could be changed to meet the Legion's approval. Among the scenes added was a narrated prologue over the credits which said the main character would be punished for sins, a new ending in which Amber watches Lord Carlton leave for Virginia and ends up accepting a supper invitation from the King's equerry, plus the deletion of scenes suggesting Amber had many lovers and the addition of new scenes to condemn her immorality. After these changes were made, the Legion of Decency took the film off the "Condemned" list and moved it to the "Class B-Objectionable in Part" listing, but the film's bookings had been severely cut due to the earlier condemnation. Fox president Spyros P. Skouras later apologized to the Legion, not for offending them but for refusing to conform to them.
Highest-grossing movie of 1947 in the USA.
This controversial movie had many production setbacks, including changes of leading lady and director. The final cost of the film was a little over $6.5 million according to Wikipedia, around double the original budget, more than six times the budget of Otto Preminger's earlier big hit Laura (1944) some three years before, and an enormous sum for the 1940s, making it one of the most expensive Hollywood films to be made to that time.
One of the most expensive movies of the '40s, costing over $6.5 million, according to Wikipedia.