Description of problem: Icon validation has to be done asynchronously since it utilizes parsing images using 'src' attribute of <img> and it works asynchronously. It relates to https://bugzilla.redhat.com/show_bug.cgi?id=1263994 that was resolved by limiting fronted icon validations on IE browsers.
not so much interesting corner case, moving out to 4.1
*** This bug has been marked as a duplicate of bug 1267228 ***