(at around 32 mins) When Holger and Anita are standing outside the shop and looking at the "curious clock", their faces can be seen reflected in the shop window. As they continue their parting conversation, Anita's mouth movement suddenly mismatches what she can be heard saying. This is followed by a mixture of audible dialogue and interspersed mouth movements from both characters that produce no sound.
(at around 19 mins) Anita and Holger enter a Swedish restaurant. The sign outside is in English, and the Swedish word "restaurang" is not used. The use of such an English word in the 1930s is highly unlikely.