Hello again, to fix the problem I removed line 13 of file includes/admin/edit-field/edit-field.php:
$value = ninja_forms_esc_html_deep( $value );
Maybe this could be a security issue…
It would be great if you find a better solution, e.g. checking the $value variable for “allowed” html tags like <img>.
Thank you very much!
#edit:
Just found that you already fixed the problem with version 2.2.25 – thank you!