If it's because of any unrelated bug then it is "broken" or not WAI. Anything that changes something, even if it's completely unrelated, and in effect "breaks" the normal effect is not WAI.
Your understanding of Intimidate is indeed wrong. It doesn't add any points (wish it did actually) it just locks the aggro on you until the timer's up and then it goes to normal, following the aggro order of "most damage", until you fire Intimidate again and then it "locks" again.
That's the way it works. So either people's impressions are wrong or people's impressions are correct, that it seems to misfire more often. The only way it would be WAI is if it was actually changed by the Devs. Otherwise it isn't.
Some people have mentioned that it seems to have changed in that you have to wait a full second before firing it again to guarantee it working like it used to. this could be because of soemthing that changed during U7. Some minor glitch. In which case, it's not WAI.