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/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();