From 1436ffd7e094c91fb27f643ca7bb4347bff08e05 Mon Sep 17 00:00:00 2001
From: Thorsten Sommer <SommerEngineering@users.noreply.github.com>
Date: Mon, 23 Mar 2026 13:31:34 +0100
Subject: [PATCH] Made event registration resilient against double
 registrations

---
 app/MindWork AI Studio/Components/MSGComponentBase.cs | 2 +-
 app/MindWork AI Studio/Tools/MessageBus.cs            | 4 ++--
 app/MindWork AI Studio/Tools/MessageBusExtensions.cs  | 2 +-
 3 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/app/MindWork AI Studio/Components/MSGComponentBase.cs b/app/MindWork AI Studio/Components/MSGComponentBase.cs
index 3e1462a1..d2ff9d84 100644
--- a/app/MindWork AI Studio/Components/MSGComponentBase.cs	
+++ b/app/MindWork AI Studio/Components/MSGComponentBase.cs	
@@ -100,7 +100,7 @@ public abstract class MSGComponentBase : ComponentBase, IDisposable, IMessageBus
             Event.PLUGINS_RELOADED,
         };
         
-        this.MessageBus.ApplyFilters(this, filterComponents, eventsList.ToArray());
+        this.MessageBus.ApplyFilters(this, filterComponents, eventsList.ToHashSet());
     }
     
     protected virtual void DisposeResources()
diff --git a/app/MindWork AI Studio/Tools/MessageBus.cs b/app/MindWork AI Studio/Tools/MessageBus.cs
index 6f27da87..f7feb24a 100644
--- a/app/MindWork AI Studio/Tools/MessageBus.cs	
+++ b/app/MindWork AI Studio/Tools/MessageBus.cs	
@@ -33,10 +33,10 @@ public sealed class MessageBus
     /// <param name="receiver">That's you, the receiver.</param>
     /// <param name="filterComponents">A list of components for which you want to receive messages. Use an empty list to receive messages from all components.</param>
     /// <param name="events">A list of events for which you want to receive messages.</param>
-    public void ApplyFilters(IMessageBusReceiver receiver, ComponentBase[] filterComponents, Event[] events)
+    public void ApplyFilters(IMessageBusReceiver receiver, ComponentBase[] filterComponents, HashSet<Event> events)
     {
         this.componentFilters[receiver] = filterComponents;
-        this.componentEvents[receiver] = events;
+        this.componentEvents[receiver] = events.ToArray();
     }
     
     public void RegisterComponent(IMessageBusReceiver receiver)
diff --git a/app/MindWork AI Studio/Tools/MessageBusExtensions.cs b/app/MindWork AI Studio/Tools/MessageBusExtensions.cs
index 7956c27e..36d8b71e 100644
--- a/app/MindWork AI Studio/Tools/MessageBusExtensions.cs	
+++ b/app/MindWork AI Studio/Tools/MessageBusExtensions.cs	
@@ -11,6 +11,6 @@ public static class MessageBusExtensions
     
     public static void ApplyFilters(this IMessageBusReceiver component, ComponentBase[] components, Event[] events)
     {
-        MessageBus.INSTANCE.ApplyFilters(component, components, events);
+        MessageBus.INSTANCE.ApplyFilters(component, components, events.ToHashSet());
     }
 }
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