Clear the encounter timeline and treasure picker from dungeon sniffs.

src/server/game/Entities/Player/Player.cpp

@@ -26511,6 +26511,15 @@ void Player::SendInitialPacketsAfterAddToMap()
         initialUpdate.SequenceIndex = m_movementCounter++;
         SendDirectMessage(initialUpdate.Write());
     }
+
+    // Dungeon captures clear the treasure picker cache with an empty packet once the player is on
+    // the instance connection. Open world does not get that clear.
+    if (GetMap()->IsDungeon())
+    {
+        WorldPackets::Misc::ClearTreasurePickerCache clearTreasurePicker;
+        SendDirectMessage(clearTreasurePicker.Write());
+    }
+
     //WowCommunity
 
     if (HasUnitState(UNIT_STATE_FLEEING | UNIT_STATE_CONFUSED) || HasAuraType(SPELL_AURA_MOD_CONFUSE) || HasAuraType(SPELL_AURA_MOD_FEAR))

src/server/game/Instances/InstanceScript.cpp

@@ -955,6 +955,10 @@ void InstanceScript::SendEncounterEnd()
 {
     WorldPackets::Instance::InstanceEncounterEnd encounterEndMessage;
     instance->SendToPlayers(encounterEndMessage.Write());
+
+    // The same end bundle in the dungeon captures clears the encounter timeline with a count of 0.
+    WorldPackets::Instance::InstanceEncounterEventSequence clearTimeline;
+    instance->SendToPlayers(clearTimeline.Write());
 }
 
 void InstanceScript::SendBossKillCredit(uint32 encounterId)

src/server/game/Server/Packets/InstancePackets.h

@@ -593,6 +593,20 @@ namespace WorldPackets
             uint32 TimerID = 0;
             bool KeepTimer = false;
         };
+
+        // SMSG_INSTANCE_ENCOUNTER_EVENT_SEQUENCE. A count of 0 is the 4-byte clear retail sends
+        // with the encounter-end bundle. Populated event records are variable and not written here.
+        class InstanceEncounterEventSequence final : public ServerPacket
+        {
+        public:
+            explicit InstanceEncounterEventSequence() : ServerPacket(SMSG_INSTANCE_ENCOUNTER_EVENT_SEQUENCE, 4) {}
+
+            WorldPacket const* Write() override
+            {
+                _worldPacket << uint32(0);
+                return &_worldPacket;
+            }
+        };
     }
 }
 

src/server/game/Server/Packets/MiscPackets.h

@@ -1476,6 +1476,15 @@ namespace WorldPackets
 
             WorldPacket const* Write() override { return &_worldPacket; }
         };
+
+        // SMSG_CLEAR_TREASURE_PICKER_CACHE. Dungeon captures send an empty body on the instance connection.
+        class ClearTreasurePickerCache final : public ServerPacket
+        {
+        public:
+            explicit ClearTreasurePickerCache() : ServerPacket(SMSG_CLEAR_TREASURE_PICKER_CACHE, 0) {}
+
+            WorldPacket const* Write() override { return &_worldPacket; }
+        };
     }
 }
 

src/server/game/Server/Protocol/Opcodes.cpp

@@ -1438,7 +1438,7 @@ void OpcodeTable::InitializeServerOpcodes()
     DEFINE_SERVER_OPCODE_HANDLER(SMSG_CLEAR_RESURRECT, STATUS_NEVER, CONNECTION_TYPE_REALM);
     DEFINE_SERVER_OPCODE_HANDLER(SMSG_CLEAR_SPELL_CHARGES, STATUS_NEVER, CONNECTION_TYPE_INSTANCE);
     DEFINE_SERVER_OPCODE_HANDLER(SMSG_CLEAR_TARGET, STATUS_NEVER, CONNECTION_TYPE_REALM);
-    DEFINE_SERVER_OPCODE_HANDLER(SMSG_CLEAR_TREASURE_PICKER_CACHE, STATUS_UNHANDLED, CONNECTION_TYPE_INSTANCE);
+    DEFINE_SERVER_OPCODE_HANDLER(SMSG_CLEAR_TREASURE_PICKER_CACHE, STATUS_NEVER, CONNECTION_TYPE_INSTANCE);
     DEFINE_SERVER_OPCODE_HANDLER(SMSG_CLOSE_ARTIFACT_FORGE, STATUS_UNHANDLED, CONNECTION_TYPE_REALM);
     DEFINE_SERVER_OPCODE_HANDLER(SMSG_CLUB_FINDER_ERROR_MESSAGE, STATUS_NEVER, CONNECTION_TYPE_REALM);
     DEFINE_SERVER_OPCODE_HANDLER(SMSG_CLUB_FINDER_GET_CLUB_POSTING_IDS_RESPONSE, STATUS_NEVER, CONNECTION_TYPE_REALM);
@@ -1839,7 +1839,7 @@ void OpcodeTable::InitializeServerOpcodes()
     DEFINE_SERVER_OPCODE_HANDLER(SMSG_INSTANCE_ENCOUNTER_EVENT_BLOCKED_CHANGED, STATUS_UNHANDLED, CONNECTION_TYPE_REALM);
     DEFINE_SERVER_OPCODE_HANDLER(SMSG_INSTANCE_ENCOUNTER_EVENT_CAST_UPDATE, STATUS_UNHANDLED, CONNECTION_TYPE_REALM);
     DEFINE_SERVER_OPCODE_HANDLER(SMSG_INSTANCE_ENCOUNTER_EVENT_RESPAWN, STATUS_UNHANDLED, CONNECTION_TYPE_REALM);
-    DEFINE_SERVER_OPCODE_HANDLER(SMSG_INSTANCE_ENCOUNTER_EVENT_SEQUENCE, STATUS_UNHANDLED, CONNECTION_TYPE_REALM);
+    DEFINE_SERVER_OPCODE_HANDLER(SMSG_INSTANCE_ENCOUNTER_EVENT_SEQUENCE, STATUS_NEVER, CONNECTION_TYPE_REALM);
     DEFINE_SERVER_OPCODE_HANDLER(SMSG_INSTANCE_ENCOUNTER_GAIN_COMBAT_RESURRECTION_CHARGE, STATUS_NEVER, CONNECTION_TYPE_INSTANCE);
     DEFINE_SERVER_OPCODE_HANDLER(SMSG_INSTANCE_ENCOUNTER_IN_COMBAT_RESURRECTION, STATUS_NEVER, CONNECTION_TYPE_INSTANCE);
     DEFINE_SERVER_OPCODE_HANDLER(SMSG_INSTANCE_ENCOUNTER_OBJECTIVE_COMPLETE, STATUS_NEVER, CONNECTION_TYPE_INSTANCE);