Translation problems when more then one preferred language is set

[thaflo]

I encountered a partial translation of the App "Tipster" under following circumstances: If in preferences -> locales is set only English as language, the app is in English If in preferences -> locales is set English and German as language, the app is half in English, half in German. As you see in the screenshot, the App reads and prints the preferred language in the Terminal. Please see screenshots

Same behavior with the App "Clipdinger". It doesn't matter if German is first on the "Preferred Languages" list or English.

Why should I set two ore even more preferred languages? I mean, what is preferred in this case? For me it's not clear, which language in this case should be used in applications. Maybe for the translation kit isn't neither :-)

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