Fixed in the next release (4.0.10).
In Moderator Tools, the "Unapprove" option has been updated to be more consistent with the behavior of the "Unapprove" option in the forums:
- "Unapprove" only works when the selected content is not currently in the moderation queue. It removes the content from public view and places it in said queue. Like Approve, it requires the permission "Can moderate wiki content".
- To provide the pre-4.0.10 behavior of "Unapprove", the "Deny" option has been added. Like "Approve", it only works when the selected content is in the moderation queue.
- When viewing any wiki page, Options > Change Moderation State is now persistent even when the page is not in the moderation queue. This allows for the "unapprove" behavior while viewing the page.