nuxeo-directory-suggestion not showing a "*" when required is true

• In Studio:
  • Create a schema with a multivalued (Directory) field
  • Mark the field as required
  • Associate the schema with a document type
• In View Designer:
  • Create the edit view of the document type.
  • This code is generated

    <nuxeo-directory-suggestion value="{{document.properties.Sector:codDependencia}}" label="[[i18n('label.schema.solscsector.coddependencia')]]" multiple="true" directory-name="SOLVODependencia" role="widget" min-chars="0" required="true"></nuxeo-directory-suggestion>

In the web page generated in Web UI the "*" in the nuxeo-directory-suggestion is missed.

NOTE: Nuxeo 9.2 used in this example