The RPM "kde-l10n-de-17.08.3-2.fc27.noarch.rpm" is installed on my Fedora 27. The printer dialog isn't complete in german (see the attached screenshot).
Created attachment 112138 [details] Printer dialog
Die ersten zwei nicht übersetzten Karteikarten Copies + Options und deren Übersetzung kommt von Qt, die letzten drei übersetzten Karteikarten kommen von frameworks/ktexteditor. -> Qt-Installation unvollständig, kaputt ...
I just checked the Qt translations (5.10) and they are fine. Maybe the translations package is not installed? It's called qttranslations5-l10n on Debian-based systems and probably similar on Fedora.
(In reply to Frederik Schwarzer from comment #3) > I just checked the Qt translations (5.10) and they are fine. Maybe the > translations package is not installed? It's called qttranslations5-l10n on > Debian-based systems and probably similar on Fedora. Thank you for your reply. This is it. It is called "qt5-qttranslations" on Fedora. This package is unfortunately not installed on Fedora KDE-Spin automatically. I think someone should inform the packaging guys by Fedora to make this package to a "dependency".