I also have this "bug", it's related to multiarch against -dev packages conventions.
One solution would be to provide a link to all arch in -dev package even if .so are missing on the system.
Or create a new <package>-multilib-dev with symbolic links (eg: libqt4-gui-multilib-dev:amd64, libqt4-gui-multilib-dev:i386, etc...).
I also have this "bug", it's related to multiarch against -dev packages conventions.
One solution would be to provide a link to all arch in -dev package even if .so are missing on the system.
Or create a new <package> -multilib- dev with symbolic links (eg: libqt4- gui-multilib- dev:amd64, libqt4- gui-multilib- dev:i386, etc...).