The first image in the product view will not zoom on mouse-over or touch. Only once I changed back and forth with the second image the first one will also zoom. Maybe I need to underlay the script responsible? Any help would be appreciated!
Try disabling your caching plugin and CDN, it looks like you are using the ShortPixel Image Optimizer plugin and it or the CDN is not serving the correct image url.
I have linked to the two image urls below, notice the size +w_805+ & +w_1498+ the correct one is not served on hover.
To anyone using image optimization – exclude the class “zoomImg” from resizing operations.