Just updated to Sourcetree for Mac 4.1.4 (20) and noticed that German Umlauts are not displayed correctly any more in the file contents diff view.
The actual contents of that file are:
special_chars_table = { # German 'Ä','Ae', 'ä','ae', 'Ö','Oe', 'ö','oe', 'Ü','ue', 'ü','ue', 'ß','ss' }
It is displayed as (copy-paste):
special_chars_table = { # German '˜','Ae', 'î','ae', 'á','Oe', 'ü','oe', 'è','ue', 'þ','ue', 'ë','ss' }