Hi,
If you are still looking for a solution, I made a change and it works great for me, but no warranties here 🙂
Go to:
[theme folder]\includes\swift-framework\page-builder\builder\lib\shortcodes.php
and change line 461. Add to the end of the array sent to wp_editor another value, called tinymce (as array) as follow:
wp_editor($default_content, 'spb_tinymce_'.$param['param_name'], array('editor_class' => 'spb_param_value spb-textarea spb_tinymce '.$param['param_name'].' '.$param['type'], 'media_buttons' => true, 'tinymce' => array('theme_advanced_buttons1' => 'bold, italic, ul, pH, temp') ));
This just added me some very essential buttons. You can add yours by using tinymce buttons. look for it in google.