Try to add the following code snippet to the Custom CSS area in Theme Settings to fix this issue.
.single-product-page.product-design-sticky .product-image-summary {
margin-bottom: 0;
}
.single-product-page.product-design-sticky #woosvimain {
margin-bottom: 0;
}
.single-product.basel-product-design-sticky .related-and-upsells > section {
position: relative;
margin-top: 0;
margin-bottom: 0;
padding-top: 80px;
background-color: white;
}
.single-product-page.product-design-sticky .product-image-summary {
position: relative;
}
.single-product-page.product-design-sticky .product-image-summary:after {
content: "";
position: absolute;
bottom: 0;
right: 0;
width: 50%;
height: 50px;
background: linear-gradient(to bottom, rgba(255,255,255,0) 0%,rgba(255,255,255,1) 100%);
}
.single-product.basel-product-design-sticky .footer-container {
margin-top: 40px;
}
Regards