Wizard - Blizzard bug?

[botzor]

Using the fire bird set and the latest trinity.. 2.8.4 it has been the same problem for all the past trinitys..
the problem:
it doesn't use blizzard in Trails.. or like bounty's like cursed events.. seems to be related to enemys spawning on screen or something my wizzard just stands there casting magic missiles when its like 300 enemy's

edit:

TargetUtil.ClusterExists(blizzardRadius, 90f, 2, false)

i would also like to know what the false part means cant find any info about it

 

[botzor]

for some reason blizzard starts working in trails again if i remove the cluster ditection
This is wat i did for a quick fix... probably not optimized but it works atleast

 // Blizzard            
            float blizzardRadius = Runes.Wizard.Apocalypse.IsActive ? 30f : 12f;
            if (!Player.IsIncapacitated && CanCast(SNOPower.Wizard_Blizzard, CanCastFlags.NoTimer) && !ShouldWaitForConventionElement(Skills.Wizard.Blizzard) &&
                (TargetUtil.AnyMobsInRange(90f) || CurrentTarget.IsBossOrEliteRareUnique || !HasPrimarySkill) &&
                (Player.PrimaryResource >= 40 || (Runes.Wizard.Snowbound.IsActive && Player.PrimaryResource >= 20)))
            {
                return new TrinityPower(SNOPower.Wizard_Blizzard, 65f, TargetUtil.GetBestClusterPoint());
            }