At 14:25, when Mr. Freeze is attempting to contact Glacia Glaze, you can see the seal in the cage. This should not be so since the seal was seen in Commissioner Gordon's office with a message from Mr. Freeze. This is confirmed at 19:01 when Batman asks the commissioner where the seal is. He tells Batman that the seal is in a bathtub down the hall.
Though he is identified as being an Icelander, Professor Issaacson speaks with no trace of having an Icelandic accent.