diff --git a/tests/e2e/markdown-copy-formatting.spec.ts b/tests/e2e/markdown-copy-formatting.spec.ts
new file mode 100644
index 00000000000..5ef99daf431
--- /dev/null
+++ b/tests/e2e/markdown-copy-formatting.spec.ts
@@ -0,0 +1,59 @@
+import { test, expect } from './helpers/orca-app'
+import { waitForActiveWorktree, waitForSessionReady } from './helpers/store'
+import {
+  cleanupMarkdownFixture,
+  createMarkdownFixture,
+  getActiveWorktreeContext,
+  openMarkdownFixture,
+  waitForRichMarkdownEditor
+} from './helpers/markdown-editor-fixture'
+
+test('copying a rich selection preserves Markdown formatting', async ({ orcaPage }, testInfo) => {
+  await waitForSessionReady(orcaPage)
+  await waitForActiveWorktree(orcaPage)
+  const context = await getActiveWorktreeContext(orcaPage)
+  const filePath = await createMarkdownFixture(
+    context,
+    'markdown-clipboard',
+    'formatted-copy',
+    testInfo.workerIndex,
+    '# Copy formatting\n\nA **bold** paragraph with a [link](https://example.com).\n'
+  )
+  try {
+    await openMarkdownFixture(orcaPage, context, filePath)
+    const editor = await waitForRichMarkdownEditor(orcaPage)
+    await expect(editor.locator('strong')).toHaveText('bold')
+    await editor.locator('p').evaluate((paragraph) => {
+      const range = document.createRange()
+      range.selectNodeContents(paragraph)
+      const selection = window.getSelection()
+      selection?.removeAllRanges()
+      selection?.addRange(range)
+      paragraph.closest<HTMLElement>('[contenteditable]')?.focus()
+      document.dispatchEvent(new Event('selectionchange'))
+    })
+    await expect
+      .poll(() => orcaPage.evaluate(() => window.getSelection()?.toString()))
+      .toBe('A bold paragraph with a link.')
+    await testInfo.attach('formatted-selection', {
+      body: await orcaPage.screenshot({ path: testInfo.outputPath('formatted-selection.png') }),
+      contentType: 'image/png'
+    })
+    const copied = await editor.evaluate((element) => {
+      // Keep this check isolated from the user's system clipboard.
+      const clipboardData = new DataTransfer()
+      element.dispatchEvent(
+        new ClipboardEvent('copy', { clipboardData, bubbles: true, cancelable: true })
+      )
+      return { text: clipboardData.getData('text/plain'), html: clipboardData.getData('text/html') }
+    })
+    expect(copied.text).toContain('**bold**')
+    expect(copied.text).toContain('[link](https://example.com)')
+    expect(copied.text).not.toContain('# Copy formatting')
+    expect(copied.html).toContain('<strong>bold</strong>')
+    await expect(editor.locator('p')).toHaveText('A bold paragraph with a link.')
+    await testInfo.attach('copied-markdown', { body: copied.text, contentType: 'text/markdown' })
+  } finally {
+    await cleanupMarkdownFixture(filePath)
+  }
+})