Originally Posted by Jackinthegreen

There are a lot of addons that track procs, so you might want to look into one and continue testing it to make sure it's not proccing right. Blizz hasn't changed it unless they did a ninja hotfix.

Looking over your talents and glyphs I can't see anything that would change it (unless Glyph of the Wise is the case, which it shouldn't be but no one tests it because it's a crappy glyph to begin with). Personally I've always had it proc properly. One thing you might consider is listening for the proc sound and making sure it goes through.