H5P content lost when collapsing/opening in Paragraphs

Hello,
This still happens in Drupal 9. Any recommendations ? So far one can work "around" this with saving the whole page once you openend a h5p part. Once you unfold another part the h5p is "emptied".

I just wanted to point out that there's a similar issue with a patch: 🐛 Paragraphs module compatibility Needs review . Maybe one of these could be closed as duplicate?

The data is not lost only when opening/closing paragraphs, but also when adding/deleting unrelated paragraph types from the entity.

I also ran into this issue when expanding/collapsing paragraphs:

• Drupal Core: 10.1.6
• Paragraphs: 1.16
• H5P: 2.0.x

It seems to be caused by the submitted form values not being properly formatted upon Expand/Collapse. A quick fix for this was to simply remove some code in H5PWidgetBase::massageFormValues.

public function massageFormValues(array $values, array $form, FormStateInterface $form_state) {

   // Remove this condition.
   if (!$form_state->isValidationComplete()) {
      return $values;
    }

    // ... Code removed for brevity ...

    // The condition is preventing this method from running which properly formats the code. 
      $return_values[$delta] = $this->massageFormValue($value['h5p_content'], $delta, $do_new_revision);
    }

    return $return_values;
}

I've attached a patch for this however since it's removing some code there is the possibility of introducing a regression. It could definitely use some extra review/testing.