Screen reader does not read help text for file upload when creating new media

Changes are made on on 11.x (our main development branch) first, and are then back ported as needed according to our policies.

I've tried to replicate the issue but can't by using the following steps...
I've tested it D10.2 & D11.0.1

Needs more info...

Updating the status to 'Needs Work' and adding the tag for STR, as #5 is unable to replicate the issue.

The aria-describedby attribute is set and it is set to the correct element, and the screen reader announces it.

<div class="js-form-item form-item js-form-type-managed-file form-type--managed-file js-form-item-upload form-item--upload">
      <label for="edit-upload-upload--ww6zLjlooeg" id="edit-upload--aatPBnZtlHw--label" class="form-item__label">Add file</label>
        <div id="edit-upload--aatPBnZtlHw" class="js-form-managed-file form-managed-file is-multiple has-upload no-value no-meta">
  <div class="form-managed-file__main">
    
    <input aria-describedby="edit-upload--aatPBnZtlHw--description" data-drupal-selector="edit-upload-upload-ww6zljlooeg" type="file" id="edit-upload-upload--ww6zLjlooeg" name="files[upload]" size="22" class="js-form-file form-file form-element form-element--type-file form-element--api-file" data-once="fileValidate auto-file-upload"><input class="js-hide upload-button button js-form-submit form-submit" data-drupal-selector="edit-upload-upload-button" formnovalidate="formnovalidate" type="submit" id="edit-upload-upload-button--U-Kw8pzuZKk" name="upload_upload_button" value="Upload" data-once="drupal-ajax">
  </div>

  
    <input data-drupal-selector="edit-upload-fids" type="hidden" name="upload[fids]">
</div>

            <div id="edit-upload--aatPBnZtlHw--description" class="form-item__description">
      One file only.<br>2 MB limit.<br>Allowed types: png gif jpg jpeg webp.

    </div>
  </div>