Problem with multiple footnotes with Personal Communication

I am working with a manuscript referring to a lot of letters. Now, I have encountered a problem with my footnotes. Something is wrong when multiple letters are written by the same author: (Please ignore the Norwegian date format)

[1] Alfred Adler, letter to Wilhelm Reich, 25. June, 1934,National Library Database.

[2] Adler, letter to National Library Database.

[3] Alfred Adler, letter to Wilhelm Reich, 26. July, 1936, National Library Database.

1 and 3 look right, but not the one in the middle. What is wrong here?

This is my template:

Personal Communication 


I’m afraid this is a known bug. See this thread.