After creating a news article and saving it, you are thrown back to
the list of all articles where the first section is "Not submitted yet"
and the button on the very bottom is labeled "Submit news article".
It looks like you are supposed to click that again, but actually,
there is a smaller "submit for moderation" link directly after the
title of the new article. Since everything is in bold it's not
immediately visible.
IMHO that big button at the bottom should rather be labeled
"Create news article".
I can push a patch if that's ok.
Christoph