Last modified: 2014-11-18 21:27:38 UTC
Currently a user does not get notified when they are reverted on Wikidata. The reason might be the different content model on item pages there?
When I visit https://www.wikidata.org/w/index.php?title=Q4115189&action=edit&undoafter=175070004&undo=175078243, there is no hidden wpUndidRevision form field which Echo is looking for. It's added by EditPage: https://github.com/wikimedia/mediawiki/blob/1766e1cd92e5b333b4a2b67ee37e90094415c47c/includes/EditPage.php#L2419
Change 174283 had a related patch set uploaded by Legoktm: Set "wpUndidRevision" hidden field in EntityAction https://gerrit.wikimedia.org/r/174283