Last modified: 2014-07-15 17:00:31 UTC
On a Flow board, inspect the HTML of the blue flow-author link above a post. It is e.g. <span class="flow-author"> <a href="/wiki/User:Jdlrobson" title="Jdlrobson" class="mw-userlink flow-ui-tooltip-target"> But the title attribute of a wiki link normally includes the page's namespace, i.e. it should be title='User:Jdlrobson". Linker.php sets the title attribute of a wikilink to getPrefixedText(), but the user links in handlebars/flow_post_author.handlebars don't incude the namespace. Note that Parsoid doesn't output any title attribute for wiki links within Flow posts, bug 68013. This is partly why Hovercards fails to show info about users on Flow boards, until bug 67466 is addressed it uses the title attribute of the link in an API query to get an extracts and thumbnail, but it isn't looking in the User namespace so usually gets no information.
In backlog: https://trello.com/c/LsIu5E5L