"Zustanden" with capital "Z" is not a German word but the spellchecker does not compalin

[Md Ayquassar]

Package: emacs
Version: 1:26.1+1-3.2ubuntu2

Distribution: 19.04 disco.

How to reproduce:

1) Open an empty text file in emacs

2) Type in the following German sentence without the quotation marks: "Wir sprechen von Zustanden in diesem Fall."

3) M-x ispell-change-dictionary[Enter] german-new8[Enter]

4) M-x ispell-buffer

5) Observe that no spellcheck error is reported. On the contrary, I expect that "Zustanden" be marked as an error and two possibilities be suggested: "Zuständen" (which would make sense semantically) and "zustanden" (as the past tense of "zustehen", though it would make no sense semantically.)

I think that the spellchecking in the background is done by aspell (though I'm unsure).