Core/Units: Allow autoattack if channelling with SPELL_ATTR5_ALLOW_ACTIONS_DURING_CHANNEL

src/server/game/Entities/Unit/Unit.cpp

@@ -1943,6 +1943,13 @@ void Unit::AttackerStateUpdate(Unit* victim, WeaponAttackType attType, bool extr
     if (HasUnitState(UNIT_STATE_CANNOT_AUTOATTACK) || HasFlag(UNIT_FIELD_FLAGS, UNIT_FLAG_PACIFIED))
         return;
 
+    if (HasUnitState(UNIT_STATE_CASTING))
+    {
+        Spell* channeledSpell = GetCurrentSpell(CURRENT_CHANNELED_SPELL);
+        if (!channeledSpell || !channeledSpell->GetSpellInfo()->HasAttribute(SPELL_ATTR5_ALLOW_ACTIONS_DURING_CHANNEL))
+            return;
+    }
+
     if (!victim->IsAlive())
         return;