Other mistake: In the scene of Jakob's execution, there is a crowd of prisoners watching (extras). If you look carefully, you can notice a boy that is laughing.
Jakob the Liar (1999)
1 other mistake
Directed by: Peter Kassovitz
Starring: Robin Williams, Liev Schreiber, Hannah Taylor Gordon, Eva Igo, Istvan Balint
Revealing mistake: In the beginning of the movie, when Jakob is chasing the newspaper, there are several times you can see the string they use to drag it.
Jakob Heym: Hitler goes to a fortune-teller and asks, "When will I die?" And the fortune-teller replies, "On a Jewish holiday." Hitler then asks, "How do you know that?" And she replies, "Any day you die will be a Jewish holiday."