Ok, i don't know how it's setup and specialized etc, so bit hard to
say from here, but if a untouched core type works as it should, so if
dmNavigation is untouched and is working properly, then there must be
something missing.
You might could setup a new project, check dmNews if it shows
correctly and then compare settings.
I really don't know where to start debugging this, maybe someone else
had experienced such same problem before?