Click on paper-menu-button inside paper-menu

[Chabane]

Hi,

Description

The click on paper-menu-button cause the dropdown of the submenu.

Expected outcome

I need to open paper-menu-button without opening the submenu

Actual outcome

Live Demo

http://jsbin.com/minofutexi/edit?html,output

Steps to reproduce

Add the code below :

<paper-menu>
  <paper-submenu>
    <paper-item class="menu-trigger">Topics
      <paper-menu-button>
        <button icon="menu" class="dropdown-trigger">click</button>
        <paper-menu class="dropdown-content">
          <paper-item>Share</paper-item>
          <paper-item>Settings</paper-item>
          <paper-item>Help</paper-item>
        </paper-menu>
      </paper-menu-button>
    </paper-item>
    <paper-menu class="menu-content">
      <paper-item>Topic 1</paper-item>
      <paper-item>Topic 2</paper-item>
      <paper-item>Topic 3</paper-item>
    </paper-menu>
   </paper-submenu>
   <paper-submenu>
    <paper-item class="menu-trigger">Faves</paper-item>
    <paper-menu class="menu-content">
      <paper-item>Fave 1</paper-item>
      <paper-item>Fave 2</paper-item>
    </paper-menu>
  </paper-submenu>
  <paper-submenu disabled>
    <paper-item class="menu-trigger">Unavailable</paper-item>
    <paper-menu class="menu-content">
      <paper-item>Disabled 1</paper-item>
      <paper-item>Disabled 2</paper-item>
    </paper-menu>
  </paper-submenu>
</paper-menu>

Browsers Affected

• Chrome
• Firefox
• Safari 9
• Safari 8
• Safari 7
• Edge
• IE 11
• IE 10