I only noticed this on one site, but for that particular site there's a ton of other customizations that were done to make a custom module work with IH4 so I never worried about it, and the client is okay with the preview not showing the image as long as the product on the customer-side shows the image correctly.. I just tried on two other random sites and the image preview works.. (not a real link below.. just wanted to show that this is the page that I am on when I see the image preview)
http :// testsite(dot)com/MY_ADMIN/product(dot)php?cPath=155_151&product_type=1&action=new_product_preview
Bookmarks