Reported at http://ee-flow.wmflabs.org/w/index.php?title=Talk:Flow_bugs&workflow=050acb70dc27f00fc8b1fa163e68c4ac&action=view but I cannot replicate.
The user is copying the content at page-top ("Flow bugs – Flow"), and pasting it into the edit box.
Then pressing "Preview" where it displays correctly.
Upon saving, the ndash appears as: â€“
Possibly this is a Windows7 problem? Or Parsoid?