I tested again and things are working fine with me - you can find attached screenshots, the icon I am using and my test pages. Since Chrome returns wrong dimensions with you it makes me think that the issue is either with your file, or with the server. Please request the image standalone and see what dimensions are returned. My best advise is still to recreate the image, perhaps in png format to make sure things are ok. Since in your case browsers treat the image as 32x32 pixels this is actually the expected display. Once you fix this things should be working properly with the RadWindow as well, since it ultimately relies on the browser to render this image.
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