Ember Twiddle

If you have the following Handlebars in an Ember application:

<select>
  <option disabled>--Select One--</option>
  <option>hello</option>
  <option selected={{true}}>goodbye</option>
  <option>maybe</option>
</select>

You'd expect the "goodbye" option to be selected and to have a selected boolean HTML attribute. It is selected, but it does not have the attribute. This means you do indeed see the "goodbye" in a closed select menu, but using CSS to style option[selected] does not work because the attribute is missing.