BuddyPress.org

No plugins and hacks aren’t really needed just some simple observation it does after all clearly say how to display/render code in posts but this is an issue that occurs on many forums. Some tender loving care is also due the bp site, in respect of this issue some strip tags need to be employed much as posting in WP does with allowed tags, trouble is people still need to pay attention (no offense intended to the OP ) and use the provided mechanisms for post formatting and that applies to all forums.