diff --git a/http-api/src/main/java/net/runelite/http/api/ws/messages/party/UserJoin.java b/http-api/src/main/java/net/runelite/http/api/ws/messages/party/UserJoin.java
index 81abe76827..7f940e8060 100644
--- a/http-api/src/main/java/net/runelite/http/api/ws/messages/party/UserJoin.java
+++ b/http-api/src/main/java/net/runelite/http/api/ws/messages/party/UserJoin.java
@@ -34,5 +34,6 @@ import net.runelite.http.api.ws.WebsocketMessage;
 public class UserJoin extends WebsocketMessage
 {
 	private final UUID memberId;
+	private final UUID partyId;
 	private final String name;
 }
diff --git a/runelite-client/src/main/java/net/runelite/client/chat/ChatMessageManager.java b/runelite-client/src/main/java/net/runelite/client/chat/ChatMessageManager.java
index bc0d3bc58a..da4c222fd6 100644
--- a/runelite-client/src/main/java/net/runelite/client/chat/ChatMessageManager.java
+++ b/runelite-client/src/main/java/net/runelite/client/chat/ChatMessageManager.java
@@ -548,8 +548,14 @@ public class ChatMessageManager
 	{
 		if (!queuedMessages.isEmpty())
 		{
-			queuedMessages.forEach(this::add);
-			queuedMessages.clear();
+			try
+			{
+				queuedMessages.forEach(this::add);
+			}
+			finally
+			{
+				queuedMessages.clear();
+			}
 		}
 	}
 
diff --git a/runelite-client/src/main/java/net/runelite/client/chat/QueuedMessage.java b/runelite-client/src/main/java/net/runelite/client/chat/QueuedMessage.java
index 9c88826af7..f89ce84b43 100644
--- a/runelite-client/src/main/java/net/runelite/client/chat/QueuedMessage.java
+++ b/runelite-client/src/main/java/net/runelite/client/chat/QueuedMessage.java
@@ -26,12 +26,14 @@ package net.runelite.client.chat;
 
 import lombok.Builder;
 import lombok.Data;
+import lombok.NonNull;
 import net.runelite.api.ChatMessageType;
 
 @Data
 @Builder
 public class QueuedMessage
 {
+	@NonNull
 	private final ChatMessageType type;
 	private final String value;
 	private String name;
diff --git a/runelite-client/src/main/java/net/runelite/client/plugins/party/PartyPlugin.java b/runelite-client/src/main/java/net/runelite/client/plugins/party/PartyPlugin.java
index b824f17157..2d7bddc3a6 100644
--- a/runelite-client/src/main/java/net/runelite/client/plugins/party/PartyPlugin.java
+++ b/runelite-client/src/main/java/net/runelite/client/plugins/party/PartyPlugin.java
@@ -37,6 +37,7 @@ import java.util.Map;
 import java.util.UUID;
 import javax.annotation.Nullable;
 import javax.inject.Inject;
+import javax.inject.Named;
 import lombok.Getter;
 import lombok.extern.slf4j.Slf4j;
 import net.runelite.api.ChatMessageType;
@@ -48,6 +49,7 @@ import net.runelite.api.Skill;
 import net.runelite.api.SoundEffectID;
 import net.runelite.api.Tile;
 import net.runelite.api.coords.WorldPoint;
+import net.runelite.api.events.CommandExecuted;
 import net.runelite.api.events.FocusChanged;
 import net.runelite.api.events.GameTick;
 import net.runelite.api.events.MenuOptionClicked;
@@ -120,6 +122,10 @@ public class PartyPlugin extends Plugin implements KeyListener
 	@Inject
 	private ChatMessageManager chatMessageManager;
 
+	@Inject
+	@Named("developerMode")
+	boolean developerMode;
+
 	@Getter
 	private final Map<UUID, PartyData> partyDataMap = Collections.synchronizedMap(new HashMap<>());
 
@@ -448,6 +454,23 @@ public class PartyPlugin extends Plugin implements KeyListener
 		worldMapManager.removeIf(PartyWorldMapPoint.class::isInstance);
 	}
 
+	@Subscribe
+	public void onCommandExecuted(CommandExecuted commandExecuted)
+	{
+		if (!developerMode || !commandExecuted.getCommand().equals("partyinfo"))
+		{
+			return;
+		}
+
+		chatMessageManager.queue(QueuedMessage.builder().type(ChatMessageType.GAMEMESSAGE).value("Party " + party.getPartyId()).build());
+		chatMessageManager.queue(QueuedMessage.builder().type(ChatMessageType.GAMEMESSAGE).value("Local Party " + party.getLocalPartyId()).build());
+		chatMessageManager.queue(QueuedMessage.builder().type(ChatMessageType.GAMEMESSAGE).value("Local ID " + party.getLocalMember().getMemberId()).build());
+		for (PartyMember partyMember : party.getMembers())
+		{
+			chatMessageManager.queue(QueuedMessage.builder().type(ChatMessageType.GAMEMESSAGE).value(" " + partyMember.getName() + " " + partyMember.getMemberId()).build());
+		}
+	}
+
 	@Nullable
 	PartyData getPartyData(final UUID uuid)
 	{
diff --git a/runelite-client/src/main/java/net/runelite/client/ws/PartyService.java b/runelite-client/src/main/java/net/runelite/client/ws/PartyService.java
index 47e9c18148..caec527320 100644
--- a/runelite-client/src/main/java/net/runelite/client/ws/PartyService.java
+++ b/runelite-client/src/main/java/net/runelite/client/ws/PartyService.java
@@ -114,6 +114,13 @@ public class PartyService
 	@Subscribe
 	public void onUserJoin(final UserJoin message)
 	{
+		if (!partyId.equals(message.getPartyId()))
+		{
+			// This can happen when a session is resumed server side after the client party
+			// changes when disconnected.
+			return;
+		}
+
 		final PartyMember partyMember = new PartyMember(message.getMemberId(), message.getName());
 		members.add(partyMember);