I used a rank 4 flash heal, it landed a critical and I was not affected by inspiration…
Seconds later I did the same thing and I was affected by inspiration buff…
Inspiration with 3 points reads… “Increases your target’s armor by 25% for 15 sec after getting a critical effect from your flash heal, heal, greater heal, or prayer of healing spell.”
nowhere in that tooltip does it say “has a chance,” so this should obviously be a 100% proc chance
ps: I have screenshots of my combat log… but for some reason I cannot post links. Is it just me or does blizzard want as little proof of bugs as possible so they don’t have to fix them?