When the Blues are arriving from their morning jog, they detect someone in their hotel room before they enter. As Jeff runs in to tackle the "literate burglar", Jane steps directly behind him to cover. In the next shot from inside the room, Jane is not in the background.
Someone says Paulina Novacek "left Prague two jumps ahead of the firing squad." Czechoslovakia had no executions after the Velvet Revolution. Before the Revolution, Czechoslovakia only executed by hanging.
The Blues recognize the Newman family during the wedding at the beginning of the movie. Later, Vern Newman asks Jeff "You mean, you didn't know those people?" If Vern did not know those people, why was he there? If he knew them, why would he call them "those people?"