On https://www.mediawiki.org/wiki/Talk:Flow_QA - when there are new unread messages present, an additional messages is displayed: "You have new messages"
When 'Mark as read' is clicked and the counter goes to 0, the message does not disappear -
even after refreshing the page (the struck-through part should be fixed with f9c580891272b1fb27df0f303c123989ae48aa97).
Another sample was on http://test.wikimedia.beta.wmflabs.org/wiki/Talk:ET37. "You have new messages" did not go away after 'Mark as read' and it is still displayed after
- refreshing the page
- navigating to a different page