Yesterday, as can be seen in https://phabricator.wikimedia.org/project/manage/230/ , @Jdforrester-WMF renamed the project MediaWiki-extensions-MultimediaViewer to MediaViewer and as a side effect changed project hashtags by adding #mediawiki-extensions-multimediaviewer and removing #mediaviewer.
- Now MediaViewer (that's a link here in the task description; I wrote its alternative hashtag #mediawiki-extensions-multimediaviewer, see "Edit task description") which links to https://phabricator.wikimedia.org/tag/mediaviewer/ is a 404, and
- writing MediaViewer (that is NOT a link here in the task description; I wrote its new primary hashtag #mediaviewer, see "Edit task description") does NOT create a link.
The project can still be reached via https://phabricator.wikimedia.org/project/manage/230/ but as this is not the first time this behavior strikes, I have not touched or tried to change anything yet.
Also CC'ing @epriestley as this baffles me and as I wonder how to best investigate this problem. Please feel very free to unsubscribe yourself!