(I post this as proxy for a user who mailed me the issue.) A mail the user received was sent with ISO-8859-1 and contains PGP/Inline encrypted data. These are shown in Claws Message view as --- Anfang der PGP/Inline verschlüsselten Daten --- [...] --- Ende der der PGP/Inline verschlüsselten Daten --- where "ü" should be "ü" The umlauts in the mail text are displayed correct. Assumption: The translated message from /usr/share/locale/de/LC_MESSAGES/claws-mail.mo is coded as UTF-8 and gets displayed in the ISO-8859-1 encoded mail incorrect.
Created attachment 1325 [details] Screenshot of broken umlauts at PGP/Mime encryption
Created attachment 1327 [details] Screenshot of working umlauts (with UTF-8) at PGP/Mime encryption