Bug report/Configuration Issue: In the course of undertaking regular monthly duties in my local capacity as a TestWiki Consul (namely, the notification and removal of inactive administrators on TestWiki), I delivered a mass message to five (5) users via their local user talk pages (link to list of mass message recipients). Note that there were five (5) users included in the list. Now here is where get things interesting...note the Special:Contributions/MediaWiki message delivery, there are only four (4) messages delivered today despite the MediaWiki message delivery system user delivering fully five (5) messages, including this one to SHEIKH yet that message is not included within the Special:Contributions page.
Not sure if this is either a Configuration issue or a Production Error, so added both, as I did assume that this is likely a MediaWiki core issue. If it's a deployed extension bug, that can be adjusted as well.
Anyway, I'd appreciate a thorough investigation into this bug and perhaps there's a maintenance script of some sort that can fix this?