Fitbit SDK bug

index.gui

<svg class="background">
  <use href="#panoramaview" id="hview">
    <use href="#panoramaview-item"> 
      <use id="btntest" href="#square-button" y="32%" height="38%" fill="red">
        <set href="#text" attributeName="text-buffer" to="btn test" />
        <set href="#text" attributeName="text-anchor" to="middle" />
      </use>
    </use>
    <use href="#panoramaview-item"> 
      <text fill="white">2</text>
    </use>
  </use>
</svg>

index.js

import document from "document";

document.getElementById("btntest").onactivate = function(evt) {
  console.log("triggered");
}

// VVVVVVVV if you remove this line bellow, the event is not called twice VVVVVVVV
document.getElementById("hview");

widgets.gui

<svg>
  <defs>
    <link rel="stylesheet" href="styles.css" />
    <link rel="import" href="/mnt/sysassets/widgets_common.gui" />
        <link rel="import" href="/mnt/sysassets/widgets/square_button_widget.gui" />
    <link rel="stylesheet" href="/mnt/sysassets/widgets/dynamic_textarea.css"/>
        <link rel="import" href="/mnt/sysassets/widgets/baseview_widget.gui" />
    <link rel="import" href="/mnt/sysassets/widgets/panoramaview_widget.gui" />
  </defs>
</svg>