Not sure if this is the right forum but didn’t see a separate bug report one. The quest Vahlarriel’s Search in Desolace (the first part) seems to be bugged, your supposed to be able to just click the malem chest to complete it, but instead, the chest has a white question mark over it and clicking on it just gives you blank quest text box and the option to ‘continue’ is grayed out, making it impossible to do any of this rather long and rewarding quest chain.
EDIT: This is in the tbc pre-patch.