Hello,
AFAIK, you have to put these lines of code in the functions.php file in order to activate the visual editor correctly (used it in conjonction with tinymce advanced).
function bbp_enable_visual_editor( $args = array() ) {
$args[‘tinymce’] = true;
$args[‘teeny’] = false;
return $args;
}
add_filter( ‘bbp_after_get_the_content_parse_args’, ‘bbp_enable_visual_editor’ );
This plugin should also do the trick (used it before and worked to enable the tinymce embedded with bbpress)
https://www.ads-software.com/plugins/bbp-toolkit/