diff --git a/frontend/src/features/workspace/OutlinerBlock.tsx b/frontend/src/features/workspace/OutlinerBlock.tsx
index 9a28d14..5ad4e48 100644
--- a/frontend/src/features/workspace/OutlinerBlock.tsx
+++ b/frontend/src/features/workspace/OutlinerBlock.tsx
@@ -816,13 +816,19 @@ export const OutlinerBlock: React.FC<OutlinerBlockProps> = ({
               {block.type === 'todo' && (
                 <span className="inline-flex items-center align-middle ml-1.5 gap-1 shrink-0 pointer-events-auto z-10 relative select-none">
                   {block.taskId && (
-                    <span
-                      className="badge-accent text-[9px] inline-flex items-center gap-0.5 px-1.5 py-0.2 rounded font-medium shrink-0"
-                      title="Mit erweiterter Aufgabe synchronisiert"
+                    <button
+                      type="button"
+                      onMouseDown={(e) => e.stopPropagation()}
+                      onClick={(e) => {
+                        e.stopPropagation();
+                        onOpenTask?.(block.taskId as string);
+                      }}
+                      className="badge-accent text-[9px] inline-flex items-center gap-0.5 px-1.5 py-0.2 rounded font-medium shrink-0 cursor-pointer hover:opacity-80"
+                      title="Erweiterte Aufgabe öffnen"
                     >
                       <CheckSquare className="w-2.5 h-2.5" />
                       <span>Erweitert</span>
-                    </span>
+                    </button>
                   )}
 
                   {canEdit && (
@@ -861,6 +867,7 @@ export const OutlinerBlock: React.FC<OutlinerBlockProps> = ({
                                     type: 'todo',
                                   };
                                   onUpdateBlockRef.current(updatedBlock, true);
+                                  onOpenTask?.(thought.id);
                                 } catch (err: any) {
                                   alert(err.message || 'Fehler beim Erstellen der erweiterten Aufgabe');
                                 }