## Renderer should handle nested editables [FF] ckeditor5#721
### TC1
1. Put the caret in the first paragraph and type something.
1. Put the caret inside the widget (in "bar").
1. Click "Undo" or press Ctrl+Z (check both).
**Expected**:
No error in the console.
### TC2
Try the same TC as above but use both nested editables. See if the focus is correctly moved between them.