Why don't German words show up in the list when I start a course for non-English speakers? (Read for more details...)

So I want to add e.g. “Katze”. If I start typing/adding this word in a German course for English speakers, the word “die Katze” shows up. However if I do the same in a German course for Hungarian speakers, the word “Katze” doesn’t show up. Neither do other German words.

Of course, this way I can’t have images (only if I manually add them) and other visual aids that would help learning.

I think words for a language should be in a separate database, so “die Katze” would be available with images in a German course for every language.

Is there any way to fix it?