Rhye HTML5 Templatee: fix for non-disappearing curtains

/* ======================================================================== */
/* 12. PJAX Finish Loading */
/* ======================================================================== */
function PJAXFinishLoading(data) {
  return new Promise((resolve) => {

    const $transitionCurtains = $('#js-page-transition-curtain, #js-header-curtain-transition');

    // Clear transition curtains
    gsap.effects.setCurtain($transitionCurtains, {
      display: 'none',
    });

    // Transition ended event
    window.dispatchEvent(new CustomEvent('arts/barba/transition/end'));

    // Hide spinner
    if (typeof window.$spinner !== 'undefined' && window.$spinner.length) {
      gsap.to(window.$spinner, 0.6, {
        autoAlpha: 0
      });
    }

    // audio backgrounds
    if (typeof window.AudioBackground !== 'undefined') {

      if (window.AudioBackground.isAudioSrc()) {
        window.AudioBackground.controller.reveal(true);
      } else {
        window.AudioBackground.controller.reveal(false);
      }
    }

    // Re-init page header
    if (typeof window.theme.header !== 'undefined') {
      window.theme.header.run();
    }

    // re-enable ScrollMagic scenes
    window.SMController.enabled(true);
    window.SMController.update(true);

    setTimeout(() => {

      // remove cloned image if it exists
      $('.clone').remove();

      // unlock scroll
      Scroll.lock(false);

      window.$barbaWrapper.removeClass('cursor-progress');
      $('.menu').removeClass('menu_disabled');

    }, 100);

    // scroll to anchor from URL hash
    Scroll.scrollToAnchorFromHash(600);

    resolve(true);

  });

}