Hello,

Try to add the following code snippet to the Custom CSS area in Theme Settings to fix this issue.

.product-grid-item .product-image-link img, 
.product-grid-item .hover-img img {
    width: 100%;
    object-position: 50% 50%;
    object-fit: contain;
    font-family: 'object-fit: cover;';
    height: 175px;
}

Kind Regards
XTemos Studio