I've been using Solar build around 2 months now on my warlock with Sunbracers. Today for some reason after melee kill, i wouldn't get buff "unlimited" solar granades at all. It is almost like 50% chance that I would or wouldnt get the buff. Tried with both Incinerator Snap and Celestial Fire on single targets without using weapons and it seems wouldnt get always buff after kill. Note, that build is exactly the same as always been and would get buff sometimes but not always. Another is even if I lower the HP with weapon and then use melee, then 100% not getting the buff, only with clear melee kills I would get but sometimes!