twanisoke

Its been a while ago, but I think it has to do with line 486 in plugins/portfolio-gallery/admin/portfolio-view.php

Mine is:
<?php the_editor($rowimages->description, $id = ‘im_description’.$rowimages->id, $prev_id = ‘im_description’.$rowimages->id, $media_buttons = false, $tab_index = 2); ?>

Check: https://codex.wordpress.org/Plugin_API/Filter_Reference/the_editor
Hope it helps 🙂