Change Details

1. Mention user U on page P 1. User U receives a notification 1. Delete page P 1. Restore page P (optional) 1. User U receives internal_api_error_BadMethodCallException when trying to view their notification flyout For example, see https://test.wikipedia.org/wiki/User_talk:Roan_Kattouw_%28WMF%29 , which I deleted and restored. This has broken the alert flyout on testwiki for Catrope and Legoktm.