diff --git a/tests/e2e/issue_sidebar.test.e2e.js b/tests/e2e/issue_sidebar.test.e2e.js
new file mode 100644
index 0000000000..5cd4872921
--- /dev/null
+++ b/tests/e2e/issue_sidebar.test.e2e.js
@@ -0,0 +1,67 @@
+// @ts-check
+import {test, expect} from '@playwright/test';
+import {login_user, load_logged_in_context} from './utils_e2e.js';
+
+test.beforeAll(async ({browser}, workerInfo) => {
+  await login_user(browser, workerInfo, 'user2');
+});
+
+async function login({browser}, workerInfo) {
+  const context = await load_logged_in_context(browser, workerInfo, 'user2');
+  return await context.newPage();
+}
+
+async function click_toggle_wip({page}) {
+  await page.locator('.toggle-wip>a').click();
+  await page.waitForLoadState('networkidle');
+}
+
+test('Pull: Toggle WIP', async ({browser}, workerInfo) => {
+  const elemTitle = '#issue-title';
+  const prTitle = 'pull5';
+  const prTitleWithSuffix = `${prTitle} #5`;
+  const page = await login({browser}, workerInfo);
+  const response = await page.goto('/user2/repo1/pulls/5');
+  await expect(response?.status()).toBe(200); // Status OK
+  await expect(page.locator(elemTitle)).toHaveText(prTitleWithSuffix);
+  await click_toggle_wip({page});
+  await expect(page.locator(elemTitle)).toHaveText(`WIP: ${prTitleWithSuffix}`);
+  await click_toggle_wip({page});
+  await expect(page.locator(elemTitle)).toHaveText(prTitleWithSuffix);
+
+  // manually edit title to another prefix
+  await page.locator('#edit-title').click();
+  await page.locator('#edit-title-input > input').fill(`[WIP] ${prTitle}`);
+  await page.locator('#save-edit-title').click();
+  await page.waitForLoadState('networkidle');
+  // and test if it is removed correctly
+  await expect(page.locator(elemTitle)).toHaveText(`[WIP] ${prTitleWithSuffix}`);
+  await click_toggle_wip({page});
+  await expect(page.locator(elemTitle)).toHaveText(prTitleWithSuffix);
+});
+
+test('Issue: Labels', async ({browser}, workerInfo) => {
+  const page = await login({browser}, workerInfo);
+  // select label list in sidebar only
+  const labelList = page.locator('.issue-content-right .labels-list a');
+  const response = await page.goto('/user2/repo1/issues/1');
+  await expect(response?.status()).toBe(200);
+  // preconditions
+  await expect(labelList.filter({hasText: 'label1'})).toBeVisible();
+  await expect(labelList.filter({hasText: 'label2'})).not.toBeVisible();
+  // add label2
+  await page.locator('.select-label').click();
+  // label search could be tested this way:
+  // await page.locator('.select-label input').fill('label2');
+  await page.locator('.select-label .item').filter({hasText: 'label2'}).click();
+  await page.locator('.select-label').click();
+  await page.waitForLoadState('networkidle');
+  await expect(labelList.filter({hasText: 'label2'})).toBeVisible();
+  // test removing label again
+  await page.locator('.select-label').click();
+  await page.locator('.select-label .item').filter({hasText: 'label2'}).click();
+  await page.locator('.select-label').click();
+  await page.waitForLoadState('networkidle');
+  await expect(labelList.filter({hasText: 'label2'})).not.toBeVisible();
+  await expect(labelList.filter({hasText: 'label1'})).toBeVisible();
+});