Apparently when notifications are displayed on Special:Notifications, they don't escape image links (and categories, though with less consequences) causing transclusion of these images.

This issue occurs only on Special:Notifications, not on the flyout content. This is likely not desirable.

Requesting information on which type of notifications are showing this behavior.

Version: master
Severity: normal
URL: https://en.wikipedia.org/w/index.php?title=Wikipedia_talk:Notifications