selectmenu content differs when created or refreshed when overriding _renderItem

When creating a selectmenu, the content of the button is the text of the selected option in the original menu.

When refreshing a selectememu, the content of the button is the text of the selected

<li>

By default both of the same, but when overriding

_renderItem

The lines setting the text are:

• for creation (l108):

  this._setText( this.buttonText, this.element.find( "option:selected" ).text() );

• for refresh (l194):

  this._setText( this.buttonText, this._getSelectedItem().text() );

I guess that both values make sense. However only one should be set.