It seemed the personal ressources for quality assurance in the LibreOffice project are not enough to even get all UI changes tested. There is an issue with not localized string in a user dialog of the Writer module. If you choose ‚Einfügen – Verzeichnis -Verzeichnis‘ you will find in the dialog a drop down box for ‚Typ‘, that includes only strings in the English language. And even the entry ‚Typ‘ in front of the box is not localized.