Changes are not saved for some submit buttons

Thanks @andyg5000 your suggestion fixed my problem with a custom action button.

In some cases $form['actions'] is not set and some notices are triggered.
This patch Just fix it, checking if the key exists in $form

Automatically closed - issue fixed for 2 weeks with no activity.

Bulk reopen.

Review: #8 states why the current code needs work.

Hi I had also this issue that my custom draft-button didn't save entity references which is added on ief.

Thanks to #15 advice that code example looks working correctly. Also I got my code working on #17 patch but I will keep #15 code changes and not patch module.

  $form['actions']['draft'] = [
    '#type' => 'submit',
    '#class' => 'form-submit',
    '#name' => 'btn-draft',
    '#value' => t('Save as draft'),
    '#attributes' => ['formnovalidate' => 'formnovalidate'],
    '#submit' => [
      ['Drupal\inline_entity_form\ElementSubmit', 'trigger'],
      '::submitForm',
      '::save',
      '_ebp_node_form_save_draft_save'
    ],
    '#ief_submit_trigger' => TRUE,
    '#ief_submit_trigger_all' => TRUE,
  ];