You are right that scribus needs them in what is the "wrong" location for the Debian policy, but I remember doing things so that it would work for both.
The package ships everything in /usr/share/scribus/doc and then sets up symlinks from e.g. /usr/share/doc/scribus/de to ../../scribus/doc/de (i.e. /usr/share/scribus/doc/de).
You are right that scribus needs them in what is the "wrong" location for the Debian policy, but I remember doing things so that it would work for both.
The package ships everything in /usr/share/ scribus/ doc and then sets up symlinks from e.g. /usr/share/ doc/scribus/ de to ../../scribus/ doc/de (i.e. /usr/share/ scribus/ doc/de) .
What is not working for you?