I was recording some PTR gameplay and procced my cheat death (Awareness Passive) right before the theme spawned. Similar to the way Nemesis Bracers don’t work in the 2 seconds you’ve procced Awareness, the theme did not go off. Weirder was that the timer didn’t just reset to 90 seconds again, but waited approximately 64 seconds to restart the 90 second timer.
Video PTR DH Proc Removes S21 Theme - YouTube