Back button in header won't go away

Back button in header won't go away

Strangely the code below produces an unwanted back button in the header. As far as I know the default behaviour of the latest JQM is a disabled back button. Even trying to force it off, it still appears in the left control group. I've placed the buttons inside control groups as I want multiple buttons inside the header.






A couple of things I've tried,

-

Tried having the right button outside the control group - no difference.
- Swapping out fieldset with controlgroup makes no difference. 

  1. <div data-role="header" data-position="inline" data-add-back-btn="false">


    <div data-role="controlgroup" class="ui-btn-left">  


    <a href="all-devices-list.html" data-ajax="true" data-role="button" data-icon="home_button_header" data-iconpos="notext">Home</a>
    <a href="phone-device.html" data-ajax="true" data-role="button" data-icon="phone_button_header" data-iconpos="notext">Phone</a>


    </div>                                  


    <h2><a href="#"><img src="themes/images/header.png" alt="Header" title="Header"></a></h2>


    <div data-type="horizontal" data-role="controlgroup" class="ui-btn-right">


    <a href="add-device.html" data-role="button" data-icon="plus_icon_header" data-iconpos="notext">Plus</a>


    </div>                                  


    </div>