Core/Units: Fix issues with threat management on phase changes

src/server/game/Combat/ThreatManager.h

@@ -242,7 +242,7 @@ class ThreatManager
         // methods to access the lists from the outside to do some dirty manipulation (scriping and such)
         // I hope they are used as little as possible.
         std::list<HostileReference*>& getThreatList() { return iThreatContainer.getThreatList(); }
-        std::list<HostileReference*>& getOfflieThreatList() { return iThreatOfflineContainer.getThreatList(); }
+        std::list<HostileReference*>& getOfflineThreatList() { return iThreatOfflineContainer.getThreatList(); }
         ThreatContainer& getOnlineContainer() { return iThreatContainer; }
         ThreatContainer& getOfflineContainer() { return iThreatOfflineContainer; }
     private:

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

@@ -16463,8 +16463,42 @@ void Unit::SetPhaseMask(uint32 newPhaseMask, bool update)
         return;
 
     if (IsInWorld())
+    {
         RemoveNotOwnSingleTargetAuras(newPhaseMask);            // we can lost access to caster or target
 
+        // modify hostile references for new phasemask, some special cases deal with hostile references themselves
+        if (GetTypeId() == TYPEID_UNIT || (!ToPlayer()->isGameMaster() && !ToPlayer()->GetSession()->PlayerLogout()))
+        {
+            HostileRefManager& refManager = getHostileRefManager();
+            HostileReference* ref = refManager.getFirst();
+
+            while (ref)
+            {
+                if (Unit* unit = ref->getSource()->getOwner())
+                    if (Creature* creature = unit->ToCreature())
+                        refManager.setOnlineOfflineState(creature, creature->InSamePhase(newPhaseMask));
+
+                ref = ref->next();
+            }
+
+            // modify threat lists for new phasemask
+            if (GetTypeId() != TYPEID_PLAYER)
+            {
+                std::list<HostileReference*> threatList = getThreatManager().getThreatList();
+                std::list<HostileReference*> offlineThreatList = getThreatManager().getOfflineThreatList();
+
+                // merge expects sorted lists
+                threatList.sort();
+                offlineThreatList.sort();
+                threatList.merge(offlineThreatList);
+
+                for (std::list<HostileReference*>::const_iterator itr = threatList.begin(); itr != threatList.end(); ++itr)
+                    if (Unit* unit = (*itr)->getTarget())
+                        unit->getHostileRefManager().setOnlineOfflineState(ToCreature(), unit->InSamePhase(newPhaseMask));
+            }
+        }
+    }
+
     WorldObject::SetPhaseMask(newPhaseMask, update);
 
     if (!IsInWorld())