Nested editable manual test

• Put selection inside foo bar baz nested editable. Main editable and nested one should be focused (blue outline should be visible).
• Change selection inside nested editable and see if Model contents change accordingly.
• Click outside the editor. Outline from main editable and nested editable should be removed.
• Check following scenario:
  • put selection inside nested editable: foo bar baz{},
  • click outside the editor (outlines should be removed),
  • put selection at exact same place as before: foo bar baz{},
  • both editables should be focused (blue outline should be visible).