In 4.0.1 Hot Streak is intended to proc in two ways
1. The same as before, two consecutive critical direct damage strikes. (Improved Hot Streak)
2. A random chance on a single direct damage critical. (normal Hot Streak talent)
However, after very unscientifically watching combat text and procs, I have yet to see HS proc off a single crit. So it seems there are three possibilities.
1. I'm wrong, it does proc fine.
2. The hot streak of a random crit has an ICD which is activated when a two crit hot streak is active, so the random crit hot streak never is even off ICD.
3. It's bugged.
Anyone know which one of the three it is?