software-mansion
diff --git a/‎.playwright/tests/strictMarks.spec.ts‎
Lines changed: 24 additions & 0 deletions b/‎.playwright/tests/strictMarks.spec.ts‎
Lines changed: 24 additions & 0 deletions
diff --git a/‎src/web/pmPlugins/StrictMarksPlugin.ts‎
Lines changed: 3 additions & 0 deletions b/‎src/web/pmPlugins/StrictMarksPlugin.ts‎
Lines changed: 3 additions & 0 deletions
@@ -143,6 +143,30 @@ test.describe('strict marks', () => {
     await expect(boldBtn).toHaveClass(/toolbar-btn--active/);
   });
 
+  test('pressing Enter in the middle of bold that is followed by plain text keeps bold and types bold', async ({
+    page,
+  }) => {
+    await setEditorHtml(page, '<html><p><b>hello</b> world</p></html>');
+
+    const editor = editorLocator(page);
+    const boldBtn = toolbarButton(page, 'bold');
+
+    await editor.click();
+    await editor.press('End');
+    // land in he|llo
+    for (let i = 0; i < 9; i++) {
+      await editor.press('ArrowLeft', { delay: 40 });
+    }
+
+    await editor.press('Enter');
+    await expect(boldBtn).toHaveClass(/toolbar-btn--active/);
+
+    await editor.pressSequentially('X', { delay: 40 });
+    await expect(boldBtn).toHaveClass(/toolbar-btn--active/);
+
+    await expect.poll(async () => getSerializedHtml(page)).toMatch(/<p><b>X/);
+  });
+
   test('pressing Enter after the last bold character keeps bold when the rest of the line is plain', async ({
     page,
   }) => {
 
@@ -104,6 +104,9 @@ export const StrictMarksPlugin = Extension.create({
           if (!selection.empty) return null;
 
           const docChanged = !oldState.doc.eq(newState.doc);
+          const selChanged = !oldState.selection.eq(newState.selection);
+          if (!docChanged && !selChanged) return null;
+
           const isExplicitToggle =
             !docChanged && transactions.some((tr) => tr.storedMarks !== null);
           if (isExplicitToggle) return null;