--- Comment #3 from Elias <[hidden email]> ---
(In reply to Katrin Fischer from comment #2)
> The translation displays on master and the po files for 17.11 contain the
> Did you make any changes to the default XSLT files? That could cause strings
> to appear untranslated.
The default XSLT files are unchanged, but after another
'sudo koha-translate --update de-DE' the translation seems fixed.