Add Button Missing in Translation

Using Drupal core 8.3.7, I have a multilingual content type with a Multivalue field Paragraph.

In the translated node the button "Add Paragrag-field" is missing, I have tried all the Add mode widget and the Classic and Experimental Paragraph widget, and in any option, the Add button is shown. I have tried in Chrome and in Firefox without result, also I don't get any error messages in the console and neither in Drupal logs.

For the moment the temporal solution that I found is to use the Experimental Paragraph Widget and use the "Duplicate" button.

What is missing in this:

<div class="clearfix">

<!-- THEME DEBUG -->
<!-- THEME HOOK: 'paragraphs_dropbutton_wrapper' -->
<!-- BEGIN OUTPUT from 'modules/contrib/paragraphs/templates/paragraphs-dropbutton-wrapper.html.twig' -->
  <div class="paragraphs-dropbutton-wrapper"><!-- THEME DEBUG --><!-- THEME HOOK: 'input__submit' --><!-- FILE NAME SUGGESTIONS:
   * input--submit.html.twig
   x input.html.twig
--><!-- BEGIN OUTPUT from 'core/themes/classy/templates/form/input.html.twig' --><input class="field-add-more-submit button js-form-submit form-submit" data-drupal-selector="edit-field-section-add-more-add-more-button-section" formnovalidate="formnovalidate" type="submit" id="edit-field-section-add-more-add-more-button-section--a91-DrWVDks" name="field_section_section_add_more" value="Add Paragrap-Field"><!-- END OUTPUT from 'core/themes/classy/templates/form/input.html.twig' --></div>
<!-- END OUTPUT from 'modules/contrib/paragraphs/templates/paragraphs-dropbutton-wrapper.html.twig' -->

</div>