diff --git a/src/renderer/extensions/minimap/composables/useMinimapViewport.test.ts b/src/renderer/extensions/minimap/composables/useMinimapViewport.test.ts
index 60437cc641..03a7fb0625 100644
--- a/src/renderer/extensions/minimap/composables/useMinimapViewport.test.ts
+++ b/src/renderer/extensions/minimap/composables/useMinimapViewport.test.ts
@@ -187,6 +187,46 @@ describe('useMinimapViewport', () => {
     expect(transform.height).toBeCloseTo(viewportHeight * 0.5) // 300 * 0.5 = 150
   })
 
+  it('should maintain strict reference equality for viewportTransform when canvas state is unchanged', () => {
+    vi.mocked(calculateNodeBounds).mockReturnValue({
+      minX: 0,
+      minY: 0,
+      maxX: 500,
+      maxY: 400,
+      width: 500,
+      height: 400
+    })
+
+    vi.mocked(enforceMinimumBounds).mockImplementation((bounds) => bounds)
+    vi.mocked(calculateMinimapScale).mockReturnValue(0.5)
+
+    const canvasRef = ref(mockCanvas) as Ref<MinimapCanvas | null>
+    const graphRef = ref(mockGraph) as Ref<LGraph | null>
+
+    const viewport = useMinimapViewport(canvasRef, graphRef, 250, 200)
+
+    mockCanvas.ds.scale = 2
+    mockCanvas.ds.offset = [-100, -50]
+
+    viewport.updateBounds()
+    viewport.updateCanvasDimensions()
+    viewport.updateViewport()
+
+    const initialTransform = viewport.viewportTransform.value
+
+    viewport.updateViewport()
+    const transformAfterIdle = viewport.viewportTransform.value
+
+    expect(transformAfterIdle).toBe(initialTransform)
+
+    mockCanvas.ds.offset = [-150, -50]
+    viewport.updateViewport()
+    const transformAfterPan = viewport.viewportTransform.value
+
+    expect(transformAfterPan).not.toBe(initialTransform)
+    expect(transformAfterPan.x).not.toBe(initialTransform.x)
+  })
+
   it('should center view on world coordinates', () => {
     const canvasRef = ref(mockCanvas) as Ref<MinimapCanvas | null>
     const graphRef = ref(mockGraph) as Ref<LGraph | null>
diff --git a/src/renderer/extensions/minimap/composables/useMinimapViewport.ts b/src/renderer/extensions/minimap/composables/useMinimapViewport.ts
index 0dd4d19df8..4aec08bdf6 100644
--- a/src/renderer/extensions/minimap/composables/useMinimapViewport.ts
+++ b/src/renderer/extensions/minimap/composables/useMinimapViewport.ts
@@ -90,12 +90,16 @@ export function useMinimapViewport(
     const centerOffsetX = (width - bounds.value.width * scale.value) / 2
     const centerOffsetY = (height - bounds.value.height * scale.value) / 2
 
-    viewportTransform.value = {
-      x: (worldX - bounds.value.minX) * scale.value + centerOffsetX,
-      y: (worldY - bounds.value.minY) * scale.value + centerOffsetY,
-      width: viewportWidth * scale.value,
-      height: viewportHeight * scale.value
-    }
+    const x = (worldX - bounds.value.minX) * scale.value + centerOffsetX
+    const y = (worldY - bounds.value.minY) * scale.value + centerOffsetY
+    const w = viewportWidth * scale.value
+    const h = viewportHeight * scale.value
+
+    const curr = viewportTransform.value
+    if (curr.x === x && curr.y === y && curr.width === w && curr.height === h)
+      return
+
+    viewportTransform.value = { x, y, width: w, height: h }
   }
 
   const updateBounds = () => {