Hi @elliot
Found with a teammate a solution. Again right in the codex 🙂
So if you want to displau the code of a Wysiwig field just use the esc_html() function.
Example :
<?php echo esc_html(get_field('my_wysiwig_field')); ?>
or (for a sub field)
<?php echo esc_html(get_sub_field('my_wysiwig_field')); ?>