Secondary images / child images not showing properly

Hello,

This is a problem on our side and it is already fixed. The product images now carry their width and their height so that the browser can reserve their space before they load, but the small thumbnails under the main image are sized by their height in the styles, so that added width made them wide and flat. The fix went in a few days after the 6.5.2 release, so your 6.5.2 build does not have it yet. Please download the install package again from your subscription page and install it over your current version :
www.hikashop.com/my-account/your-subscriptions.html

If you would rather not update right now, adding this to your template CSS gives the same result :

img.hikashop_child_image {
	width: auto;
}