diff --git i/plugins/github/components/markdown-lite.test.tsx w/plugins/github/components/markdown-lite.test.tsx
index ab714de86e..3e65cb4792 100644
--- i/plugins/github/components/markdown-lite.test.tsx
+++ w/plugins/github/components/markdown-lite.test.tsx
@@ -81,4 +81,23 @@ After the table.`}
     expect(slot.navigateCalls).toEqual([]);
     slot.unmount();
   });
+
+  it("offers an image link when an attachment cannot load", () => {
+    const slot = renderSlot(
+      {
+        component: () => (
+          <Markdown content="![Attachment preview](https://example.invalid/attachment.png)" />
+        ),
+      },
+      {},
+    );
+
+    const image = slot.container.querySelector("img");
+    expect(image).not.toBeNull();
+    image?.dispatchEvent(new Event("error"));
+    expect(
+      slot.getByRole("link", { name: "Attachment preview" }).getAttribute("href"),
+    ).toBe("https://example.invalid/attachment.png");
+    slot.unmount();
+  });
 });