BuddyPress.org

I think this is because every new activity item is going through the wp_kses filter and if those elements are not in the allowed list they will be stripped. There’s a filter yu can use to allow these extra elements. I’ve an example below showing how to allow paragraph tags:

function venutius_activity_allowed_tags( $allowed_tags ) {

	return array_merge_recursive( $allowed_tags, array(
		'p'	 => array(),
	) );
}

add_filter( ‘bp_activity_allowed_tags’, ‘venutius_activity_allowed_tags’ );’