When do an "undo" and than use the preview or show changes button the request lost the information about the undo, so Extension cannot use this information, when save the page. Please reassigned the undo and undoafter parameter als hidden fields, so Extension can use this information.

This is relevant for FlaggedRevs, because the Extension fails on autosighted undo edits (see FlaggedRevsView.php, function addRevisionIDField for more details), after preview.

Thanks.

Version: unspecified
Severity: enhancement