Tooltip is not hidden in Vaadin 18

[javier-godoy]

When used in a Vaadin 18 application (Vaadin 18.0.5 and vcf-tooltip 1.3.11) a small rounded rectangle remains visible after moving the mouse away from the target component.

  render() {
    return html`    
<vaadin-button id="submit-button" theme="primary">Submit</vaadin-button>
<vcf-tooltip id="submit-button-tooltip-id" for="submit-button" position="top" align="left">
Submit
</vcf-tooltip>
   `;
  }

[javier-godoy]

Seems to be fixed with:

registerStyles('vcf-tooltip', css`
 :host([hidden]) [part='container'] {
  display: none !important;
 }
`);