Magnific Popup Jumping Problem Fixed

Magnific-Popup-Jumping.js

$('.open-link').magnificPopup({
  type: 'image',
  closeOnBgClick: true,
  fixedContentPos: false,
  callbacks: {
    open: function() {
      jQuery('body').addClass('noscroll');
    },
    close: function() {
      jQuery('body').removeClass('noscroll');
    }
  }
});

Finally, create a CSS rule for noscroll as :

body.noscroll {
  overflow-y: hidden!important;
}