I am using the NovelLite theme (version 1.6.3) with WordPress version 5.2.2 and WooCommerce version 3.6.4.. On the page that lists an individual product, if I click on a thumbnail in the gallery under the main image, it opens the image with an almost black background and no controls to move to the next or previous image in the gallery and no button to close the image and return to the product page. The only way to get back to the product is to use the browser's back button. That is not the default WooCommerce behavior. Is there something I need to do to enable the normal behaviors? Thank you!