All of a sudden the members of our Writer role, which does not have
Publish rights, cannot send drafts for review! The two radio button
choices ("Send e-mail with a link to a preview of the draft" and "Send
the draft to another Contribute user") that normally appear at the top
of the Send for Review dialog have disappeared.

Any clues to what may have changed? This worked fine for us until today
-- for weeks our Writers have been sending draft review requests to
Publishers, who've then published the drafts. Our Writers are
completely stuck since they now cannot request draft reviews.

TIA