Hi @Bill616, thanks for the good question. Are you using a custom modal with Javascript? Or are you using a modal window created using interactions?
A link to the site would be very helpful: Share a read-only link | Webflow University
One thing to try, if using a javascript modal, is to include the slider redraw function just after the fadein, for example:
$(document).ready(function() {
$('.modal-open').click(function() {
$('.modal-window').fadeIn();
Webflow.require('slider').redraw();
});
$('.close-modal').click(function() {
$('.modal-background-1').fadeOut();
});
});
I hope this helps!