Activity not working under the latest Chrome/Firefox

[TOuhrouche]

The activity spinner is no longer showing on all places it used to work.
Trying this http://jsfiddle.net/hfjallemark/zEKRb/ on Chrome 35.0.1916.114 never shows the activity spinner.

[dustin-page]

This doesn't work because the KoLite - asyncCommand Sample you have is missing the font awesome spinner font.
Include reference to it in the head tags.
link href="//maxcdn.bootstrapcdn.com/font-awesome/4.2.0/css/font-awesome.min.css" rel="stylesheet"

Please see my example here:
http://plnkr.co/edit/3FBVkpmWtsjDcKYwceGu?p=preview