diff --git a/examples/github-api/tests/canvas-demo.spec.ts b/examples/github-api/tests/canvas-demo.spec.ts
index 36ec2f3be3..a9a98de7dc 100644
--- a/examples/github-api/tests/canvas-demo.spec.ts
+++ b/examples/github-api/tests/canvas-demo.spec.ts
@@ -55,4 +55,15 @@ test('Go JS', async ({ page }) => {
       y: 289
     }
   });
+});
+
+test('ThreeJS', async ({ page }) => {
+  await page.addInitScript(() => {
+    const original = window.HTMLCanvasElement.prototype.getContext;
+    window.HTMLCanvasElement.prototype.getContext = function(id, options) { return original.call(this, id, {...options, preserveDrawingBuffer: true }) }
+  });
+  await page.goto('https://threejs.org/examples/webgl_animation_skinning_morph.html');
+  await page.waitForTimeout(1000);
+  await page.getByLabel('Surprised').fill('1');
+  await page.waitForTimeout(1000);
 });
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