Use "custom" mode if no fields are available
>>> [!note] Migrated issue <!-- Drupal.org comment --> <!-- Migrated from issue #2873765. --> Reported by: [yannickoo](https://www.drupal.org/user/531118) >>> <p>We should disable the field select list, display a message above it explaining why they cannot use the field mode. By default "custom" mode is used.</p>
issue