diff --git a/packages/cmsui/acceptance/tests/toolbar-text-marks.test.ts b/packages/cmsui/acceptance/tests/toolbar-text-marks.test.ts
new file mode 100644
index 00000000000..3bc1754b7e8
--- /dev/null
+++ b/packages/cmsui/acceptance/tests/toolbar-text-marks.test.ts
@@ -0,0 +1,173 @@
+import type { Page } from '@playwright/test';
+import { expect, test } from '../../../tooling/playwright/test';
+import { login } from '../../../tooling/playwright/login';
+import { createContent } from '../../../tooling/playwright/content';
+import { waitForPlateEditorReady } from '../../../tooling/playwright/plate';
+import {
+  getEditorHandle,
+  setSelection,
+  clickAtPath,
+} from '@platejs/playwright';
+
+const BODY_TEXT = 'Hello toolbar text';
+
+// Paragraph text is at path [1] (after the title node at [0])
+async function selectParagraphText(
+  page: Page,
+  { start, end }: { start: number; end: number },
+) {
+  const editorHandle = await getEditorHandle(page);
+  await clickAtPath(page, editorHandle, [1]);
+  await setSelection(page, editorHandle, {
+    anchor: { path: [1, 0], offset: start },
+    focus: { path: [1, 0], offset: end },
+  });
+}
+
+function withSomersaultBody(bodyText: string) {
+  return (body: Record<string, unknown>): Record<string, unknown> => ({
+    ...body,
+    blocks: {
+      __somersault__: {
+        '@type': '__somersault__',
+        value: [
+          { type: 'title', children: [{ text: (body as any).title ?? '' }] },
+          { type: 'p', children: [{ text: bodyText }] },
+        ],
+      },
+    },
+    blocks_layout: { items: ['__somersault__'] },
+  });
+}
+
+function toolbarButton(page: Page, lucideClass: string) {
+  return page.locator(`button:has(.${lucideClass})`);
+}
+
+async function openToolbarTestPage(
+  page: Page,
+  {
+    contentId,
+    contentTitle,
+    bodyText = BODY_TEXT,
+  }: {
+    contentId: string;
+    contentTitle: string;
+    bodyText?: string;
+  },
+) {
+  await createContent(page, {
+    contentType: 'Document',
+    contentId,
+    contentTitle,
+    transition: 'publish',
+    bodyModifier: withSomersaultBody(bodyText),
+  });
+
+  const contentPath = `/${contentId}`;
+  await page.goto(`/@@edit/${contentId}`, { waitUntil: 'networkidle' });
+  await waitForPlateEditorReady(page);
+  return { contentPath };
+}
+
+async function savePage(page: Page, contentPath: string, contentTitle: string) {
+  await page.getByRole('button', { name: 'Save' }).click();
+  await page.waitForURL(contentPath, { waitUntil: 'load', timeout: 30_000 });
+  await expect(page.getByRole('heading', { name: contentTitle })).toBeVisible();
+}
+
+test.describe('Plate toolbar — text marks', () => {
+  test.beforeEach(async ({ page }) => {
+    await login(page);
+  });
+
+  test('clicking the Bold button wraps selected text in <strong> and persists after save', async ({
+    page,
+  }) => {
+    const { contentPath } = await openToolbarTestPage(page, {
+      contentId: 'toolbar-bold-test',
+      contentTitle: 'Toolbar bold test',
+    });
+
+    await selectParagraphText(page, { start: 0, end: 5 });
+
+    const boldBtn = toolbarButton(page, 'lucide-bold');
+    await expect(boldBtn).toBeVisible();
+    await boldBtn.click();
+
+    const editorBoldText = page
+      .locator('.slate-editor[data-slate-editor]')
+      .locator('strong')
+      .first();
+    await expect(editorBoldText).toBeVisible();
+    await expect(editorBoldText).toHaveText('Hello');
+
+    await savePage(page, contentPath, 'Toolbar bold test');
+
+    const viewBoldText = page
+      .locator('strong')
+      .filter({ hasText: 'Hello' })
+      .first();
+    await expect(viewBoldText).toBeVisible();
+  });
+
+  test('clicking the Italic button wraps selected text in <em> and persists after save', async ({
+    page,
+  }) => {
+    const { contentPath } = await openToolbarTestPage(page, {
+      contentId: 'toolbar-italic-test',
+      contentTitle: 'Toolbar italic test',
+    });
+
+    await selectParagraphText(page, { start: 0, end: 5 });
+
+    const italicBtn = toolbarButton(page, 'lucide-italic');
+    await expect(italicBtn).toBeVisible();
+    await italicBtn.click();
+
+    const editorItalicText = page
+      .locator('.slate-editor[data-slate-editor]')
+      .locator('em')
+      .first();
+    await expect(editorItalicText).toBeVisible();
+    await expect(editorItalicText).toHaveText('Hello');
+
+    await savePage(page, contentPath, 'Toolbar italic test');
+
+    const viewItalicText = page
+      .locator('em')
+      .filter({ hasText: 'Hello' })
+      .first();
+    await expect(viewItalicText).toBeVisible();
+  });
+
+  test('clicking the Strikethrough button wraps selected text in <s> and persists after save', async ({
+    page,
+  }) => {
+    const { contentPath } = await openToolbarTestPage(page, {
+      contentId: 'toolbar-strikethrough-test',
+      contentTitle: 'Toolbar strikethrough test',
+    });
+
+    await selectParagraphText(page, { start: 0, end: 5 });
+
+    const strikethroughBtn = toolbarButton(page, 'lucide-strikethrough');
+    await expect(strikethroughBtn).toBeVisible();
+    await strikethroughBtn.click();
+
+    const editorStrikethroughText = page
+      .locator('.slate-editor[data-slate-editor]')
+      .locator('s')
+      .first();
+    await expect(editorStrikethroughText).toBeVisible();
+    await expect(editorStrikethroughText).toHaveText('Hello');
+
+    await savePage(page, contentPath, 'Toolbar strikethrough test');
+
+    const viewStrikethroughText = page
+      .locator('s')
+      .filter({ hasText: 'Hello' })
+      .first();
+    await expect(viewStrikethroughText).toBeVisible();
+  });
+});
diff --git a/packages/cmsui/news/+toolbar-text-marks-playwright.internal b/packages/cmsui/news/+toolbar-text-marks-playwright.internal
new file mode 100644
index 00000000000..e593ac1ff8d
--- /dev/null
+++ b/packages/cmsui/news/+toolbar-text-marks-playwright.internal
@@ -0,0 +1 @@
+Playwright test for bold, italics and striketrough toolbar options. @iFlameing
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