Goofs

In the opening, Chaplin's hair is wind-blown in wide shots and neat in the close-ups.

When Hearst waves goodbye from the boat, a chair appears in the second shot.

The trailer announces "Edward Herrmann as William Randolf Hearst". The correct spelling is William Randolph Hearst.

At 1:36:53 Marion Davies' suite, when Samsonite/Schwayer Streamlite luggage in Admiral blue is visible. Samsonite did not begin manufacturing Streamlite until the late-'30s/early-'40s.

The flag flying at the back of the yacht is the current US flag, which didn't come into use until 1959. In 1924, there were 48 stars in neat rows and columns 8 x 6.

Elinor Glyn rides off in the back of a late-1927 Ford Model A.

When he looks up Ince's address, Hearst's address book shows two-letter state abbreviations (CA). These did not come into use until some fifty years later. Further, the address book displays at least one ZIP code, introduced in 1963.

Edit: The abbreviation for California of CA is not necessarily an anachronism. People frequently use abbreviations of their own invention, and Hearst could have invented CA, just as easily as he could have invented OR, WA, etc.

The Walther PPK pistol was not produced until 1931, nor would it have a plastic finger extension on the magazine's base plate.

As the Charleston dancers file out of the dining room, led by the saxophonist and banjo player, the sax and banjo sounds fade out, but so do the sounds of a piano and drum kit (which remain in the room).