Posts marked “Submit for Review” vanish!

I upgraded to 2.5.1 yesterday. I had this problem before I did the upgrade, and it still exists.

When I click on “Submit for Review”, the post disappears completely. It does not appear in the either the contributor’s or the editor’s list of posts.

The same happens when a post is set to “Pending Review” and saved.

Trying to debug this, I hacked wp-admin/edit-form-advanced.php to change “pending” to “draft” for the above actions, and with that change, the posts stay as drafts and don’t disappear.

So it appears like marking a post “pending” is somehow causing it to be lost in the database, or at least, it cannot be queried.

I read a post in the MU WordPress forum which said that this is because “pending” is not in the list of enumerated types. I have so far not been able to figure out what that exactly means, w.r.t WordPress code.

Any help to resolve this would be much appreciated.