test: add paste deduplication regression test

Co-authored-by: Copilot <copilot@github.com>

Author: ihordubas99

test/lib/components/integration/editor.inlineChip.browser.test.tsx

@@ -132,4 +132,31 @@ describe('Inline chip - remove', () => {
     await expect.element(page.getByText('#123')).not.toBeInTheDocument();
     await expect.element(page.getByText('In Progress')).not.toBeInTheDocument();
   });
+});
+
+describe('Inline chip - paste deduplication', () => {
+  it('resizing a pasted chip does not affect the original', async () => {
+    renderEditor();
+    await insertInlineChipViaSlashMenu();
+
+    await userEvent.keyboard('{Control>}a{/Control}');
+    await userEvent.keyboard('{Control>}c{/Control}');
+
+    await userEvent.keyboard('{Control>}{End}{/Control}');
+    await userEvent.keyboard('{Control>}v{/Control}');
+
+    const chips = page.getByText('#123');
+    expect((await chips.all()).length).toBe(2);
+
+    await userEvent.click(page.getByText('#123').nth(1));
+    await expect.element(page.getByTestId('popover-content')).toBeVisible();
+    await userEvent.click(page.getByTitle('Change size'));
+    await expect.element(page.getByTestId('size-menu')).toBeVisible();
+    await userEvent.click(page.getByRole('button', { name: 'Tiny (inline)', exact: true }));
+
+    // Second chip is now XXS - status hidden for that chip
+    // First chip should still be S - "In Progress" still visible once
+    const statusBadges = page.getByText('In Progress');
+    expect((await statusBadges.all()).length).toBe(1);
+  });
 });