I'm looking a the current code and am wondering if this is fixed.
I see a call to ad_text_to_html in /forums/www/message-preview-chunk.tcl. However, I don't see an attempt to convert text to html in /forums/www/message-view.tcl. I also checked the possibility that the content is converted before it put in the database and this was not the case.
So my conclusion is that there is no text-to-html conversion attempted at all. Is this the case and is someone actively working on it (in which case I'll just wait)?