Ext.require() does not fire a callback in IE10

[DaniilVeriga]

http://forums.ext.net/showthread.php?60251

There is a problem in IE10 which is discussed in details here:
cujojs/curl#131

UPDATE: Still actual in 6.0.1.

[fabriciomurta]

This is not reproducible with ExtJS: Ext.require() working with IE10.

To try to reproduce the issue, open the fiddle in preview mode 1️⃣ 2️⃣ with IE10 (or IE11 in IE10 emulation mode!) and notice how the alerts work.

The Ext.NET test case breaks with IE11 in IE10 emulation mode, works also in IE9 emulation.

1️⃣ Fiddle in preview mode: https://fiddle.sencha.com/fiddle/196h/preview
2️⃣ if you do changes in the direct fiddle, they only reflect to the preview fiddle once saved, so if you want to try changing the fiddle you have to fork it and preview the changes from your fork!