ChaosEMU/ChaosCore — comment on commit 7cefeb086fb83914328fbae9269f6c7d11731557
File:  line 0
By bloodfangx:

Not sure if this what the issue you were talking about but

me->SetFlag(UNIT_FIELD_FLAGS, UNIT_FLAG_PASSIVE);

on Void Reset for mob_halion_flame_custom will fix the moving flames attacking players.