diff --git a/src/lib/litegraph/src/LGraphNode.ts b/src/lib/litegraph/src/LGraphNode.ts
index a68f2a82df..e28fca23f9 100644
--- a/src/lib/litegraph/src/LGraphNode.ts
+++ b/src/lib/litegraph/src/LGraphNode.ts
@@ -743,35 +743,6 @@ export class LGraphNode
       error: this.#getErrorStrokeStyle,
       selected: this.#getSelectedStrokeStyle
     }
-
-    // Assign onMouseDown implementation
-    this.onMouseDown = (
-      // @ts-expect-error - CanvasPointerEvent type needs fixing
-      e: CanvasPointerEvent,
-      pos: Point,
-      canvas: LGraphCanvas
-    ): boolean => {
-      // Check for title button clicks (only if not collapsed)
-      if (this.title_buttons?.length && !this.flags.collapsed) {
-        // pos contains the offset from the node's position, so we need to use node-relative coordinates
-        const nodeRelativeX = pos[0]
-        const nodeRelativeY = pos[1]
-
-        for (let i = 0; i < this.title_buttons.length; i++) {
-          const button = this.title_buttons[i]
-          if (
-            button.visible &&
-            button.isPointInside(nodeRelativeX, nodeRelativeY)
-          ) {
-            this.onTitleButtonClick(button, canvas)
-            return true // Prevent default behavior
-          }
-        }
-      }
-
-      return false // Allow default behavior
-    }
-
     // Initialize property manager with tracked properties
     this.changeTracker = new LGraphNodeProperties(this)
   }
diff --git a/tests-ui/tests/litegraph/core/LGraphNode.test.ts b/tests-ui/tests/litegraph/core/LGraphNode.test.ts
index 1d47df5d8f..3eb38215f3 100644
--- a/tests-ui/tests/litegraph/core/LGraphNode.test.ts
+++ b/tests-ui/tests/litegraph/core/LGraphNode.test.ts
@@ -621,5 +621,10 @@ describe('LGraphNode', () => {
       expect(node.getInputSlotPos(inputSlot)).toEqual([expectedX, expectedY])
       delete (node.constructor as any).slot_start_y
     })
+    test('should not overwrite onMouseDown prototype', () => {
+      expect(Object.prototype.hasOwnProperty.call(node, 'onMouseDown')).toEqual(
+        false
+      )
+    })
   })
 })
diff --git a/tests-ui/tests/litegraph/core/__snapshots__/LGraph.test.ts.snap b/tests-ui/tests/litegraph/core/__snapshots__/LGraph.test.ts.snap
index d3e6de7b2e..1ce83fb465 100644
--- a/tests-ui/tests/litegraph/core/__snapshots__/LGraph.test.ts.snap
+++ b/tests-ui/tests/litegraph/core/__snapshots__/LGraph.test.ts.snap
@@ -84,7 +84,6 @@ LGraph {
       "lostFocusAt": undefined,
       "mode": 0,
       "mouseOver": undefined,
-      "onMouseDown": [Function],
       "order": 0,
       "outputs": [],
       "progress": undefined,
@@ -157,7 +156,6 @@ LGraph {
       "lostFocusAt": undefined,
       "mode": 0,
       "mouseOver": undefined,
-      "onMouseDown": [Function],
       "order": 0,
       "outputs": [],
       "progress": undefined,
@@ -231,7 +229,6 @@ LGraph {
       "lostFocusAt": undefined,
       "mode": 0,
       "mouseOver": undefined,
-      "onMouseDown": [Function],
       "order": 0,
       "outputs": [],
       "progress": undefined,