Allowing override of revisions automatically sets nodes to published?

When I give a role "override revisions" permission for a given content type, nodes of that type are always published -- even though the default for that type is unpublished.

To be more specific, I have a "News" content type and an "Author" role. I want any News nodes created by Authors to be unpublished until an administrator manually publishes them -- but I want Authors to be able to create revisions as they work on an article. So under the workflow options for the News type, I've unchecked the "Published" box and checked the "Create Revisions" box. And for Author permissions, I've unchecked "override news published option" and checked "override news revision option".

Yet, when an Author creates a News node, it's always published.

Any thoughts? Anyone else having this problem?