Ports from (https://github.com/TrinityCore/TrinityCore)

Core/Unit: don't clear low health aura states on death
Core/Gossip: Fix gossip bug on modify money
Core/Spells: Change the radius of PBAoEs following the feedback received on
Core/Player: update interaction checks, some info taken from client
Core/Spell: abort channeling if no valid targets are found after searching
Core/Creature: fix _DespawnAtEvade saving wrong respawn time
Core/Spell: fixed some problems with per caster aura states
Quickfix a bug introduced by 2f19d97 which prevented GTAoE from being cast.
Core/SmartAI: allow SMART_ACTION_SEND_GOSSIP_MENU to override default gossip
Core/Spell: in case of immunity, check all effects to choose correct procFlags, as none has technically hit
Fix evade issues when a spell hits the target just before evading.
Scripts/Command: implement .debug play music command
Partial revert, Unit::getAttackerForHelper() shouldn't return units that we aren't in combat with (victim can be such a unit for players/player pets, which can startattack from a distance without entering combat).
Fix an issue where CanSpawn would never get invoked on creatures without per-guid script.
Core/Players: fix null dereference crash

Source/Game/AI/SmartScripts/SmartAI.cs

@@ -791,14 +791,16 @@ namespace Game.AI
 
         public override bool GossipHello(Player player)
         {
+            _gossipReturn = false;
             GetScript().ProcessEventsFor(SmartEvents.GossipHello, player);
-            return false;
+            return _gossipReturn;
         }
 
         public override bool GossipSelect(Player player, uint menuId, uint gossipListId)
         {
+            _gossipReturn = false;
             GetScript().ProcessEventsFor(SmartEvents.GossipSelect, player, menuId, gossipListId);
-            return false;
+            return _gossipReturn;
         }
 
         public override bool GossipSelectCode(Player player, uint menuId, uint gossipListId, string code)
@@ -993,6 +995,8 @@ namespace Game.AI
 
         public void SetWPPauseTimer(uint time) { mWPPauseTimer = time; }
 
+        public void SetGossipReturn(bool val) { _gossipReturn = val; }
+
         bool mIsCharmed;
         uint mFollowCreditType;
         uint mFollowArrivedTimer;
@@ -1032,6 +1036,9 @@ namespace Game.AI
         // Vehicle conditions
         bool mHasConditions;
         uint mConditionsTimer;
+
+        // Gossip
+        bool _gossipReturn;
     }
 
     public class SmartGameObjectAI : GameObjectAI
@@ -1064,15 +1071,16 @@ namespace Game.AI
 
         public override bool GossipHello(Player player, bool reportUse)
         {
-            Log.outDebug(LogFilter.ScriptsAi, "SmartGameObjectAI.GossipHello");
+            _gossipReturn = false;
             GetScript().ProcessEventsFor(SmartEvents.GossipHello, player, reportUse ? 1 : 0u, 0, false, null, me);
-            return false;
+            return _gossipReturn;
         }
 
         public override bool GossipSelect(Player player, uint menuId, uint gossipListId)
         {
+            _gossipReturn = false;
             GetScript().ProcessEventsFor(SmartEvents.GossipSelect, player, menuId, gossipListId, false, null, me);
-            return false;
+            return _gossipReturn;
         }
 
         public override bool GossipSelectCode(Player player, uint menuId, uint gossipListId, string code)
@@ -1132,9 +1140,14 @@ namespace Game.AI
             GetScript().ProcessEventsFor(SmartEvents.SpellHit, unit, 0, 0, false, spellInfo);
         }
 
+        public void SetGossipReturn(bool val) { _gossipReturn = val; }
+
         public SmartScript GetScript() { return mScript; }
 
         SmartScript mScript;
+
+        // Gossip
+        bool _gossipReturn;
     }
 
     public enum SmartEscortState

Source/Game/AI/SmartScripts/SmartScript.cs

@@ -2189,7 +2189,7 @@ namespace Game.AI
                     }
                 case SmartActions.SendGossipMenu:
                     {
-                        if (GetBaseObject() == null)
+                        if (GetBaseObject() == null || !IsSmart())
                             break;
 
                         Log.outDebug(LogFilter.ScriptsAi, "SmartScript.ProcessAction. SMART_ACTION_SEND_GOSSIP_MENU: gossipMenuId {0}, gossipNpcTextId {1}",
@@ -2199,6 +2199,12 @@ namespace Game.AI
                         if (targets.Empty())
                             break;
 
+                        // override default gossip
+                        if (me)
+                            ((SmartAI)me.GetAI()).SetGossipReturn(true);
+                        else if (go)
+                            ((SmartGameObjectAI)go.GetAI()).SetGossipReturn(true);
+
                         foreach (var obj in targets)
                         {
                             Player player = obj.ToPlayer();