18.04 – Labeling missing sections of the menu bar in the German version of okular

I notice that in the German localization of Okular, some menu bar items are missing, but "Kein Text"(" no text "), for example the File section left (it should be said Datei).

In addition, my beloved entry Recently opened files is missing. There is not even one Open entry into the File menu.

It's strange since on other computers with Ubuntu 18.04 that I've used, it works.

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