Images not visible in IE

Hi,

My image hotspots are loaded as normal, but other images, like;
<layer type="text" url="..." /><layer type="container" url="..." /> are not loaded in IE and edge. The layer is there and it's clickable. But no image is loaded. Works like a charm in all other browsers.


Am I missing something?

So simple, but not quite obvious. Thanks a bunch! :D