You might have noticed that the text in the field for "Details" of a task and the text for comments is somehow smashed and the text is mixed italics and _'s are stripped out.
The reason for this is that the text is parsed by a MarkDown Plugin which transforms the text into HTML and assumes that you've used the MarkDown syntax in the text.
I've never heard of MarkDown before and didn't know that Flyspray uses it, so I just wondered what happens with the text. I got used to BBCode from the Forum and learning the Markdown Syntax is another step towards wisdom (I think about replacing that Markdown parser by BBcode writer & parser).
You can test your written text before posting it to the bugtracker if you want to.