A newspaper meant to be for the current date in the movie, is shown with the date Monday, April 5, 1948. Later, another newspaper, also meant to be for what is now the current date, is shown, and the date is Friday, March 26, 1948.
(at around 47 mins) Madams Matthews and Draper are having a cocktail in the study prior to Mr. Matthews's speech broadcast from home. When they request another round, a tray of four is brought to them. Before it is set down, it's already seen on the table. A few shots later, the tray disappears then reappears.
Katharine Hepburn's name is misspelled in the opening credits as "Katherine". This is the result of the original MGM opening credits (MGM was the original theatrical distributor) being replaced by haphazardly-designed replacement credits when MGM's distribution rights expired.
Cinematographer George J. Folsey's name is misspelled in the reissue opening credits as "Falsey". This is the result of the original MGM opening credits (MGM was the original theatrical distributor) being replaced by haphazardly-designed replacement credits when MGM's distribution rights expired.
Adolphe Menjou's name is misspelled, but only in the opening credits, where he is credited as 'Adolph'. In the closing credits, his name is spelled correctly. This is the result of the original MGM opening credits (MGM was the original theatrical distributor) being replaced by haphazardly-designed replacement credits when MGM's distribution rights expired.
During the airliner loop scene, Katharine Hepburn is seen rotating in a complete circle; however, items on the table, her hair, and the item she's knitting never move. It is obvious the movie frames were rotated in a circle.
At approximately 1:09:20, a newspaper article is shown with the caption MATTHEWS OBVIOUS PRESIDENTIAL TIMBER. The first two paragraphs are pertinent to the story. After that, there are parts of several different stories, with partial sentences in the rest of the article.
At approximately 1:31:44, a newspaper article has Grant's name misspelled as "Grand."
At the end of the movie, Grant speaks to the nation via radio and TV broadcast. In the wide shots his lips don't match his words.