http://bugs.winehq.org/show_bug.cgi?id=9771
--- Comment #79 from thexception email@thexception.net 2008-05-21 20:58:54 --- The Steam Friends Chat-Window always contains a "link" called "Never tell your password to anyone".
After clicking on it i can see my own message even the new lines i write after that. It opens up a error dialog but you can close it simply with ok.
Messages from others get visible after clicking that "link" again. And i can refresh it and see new messages always after clicking on it.