md-fab-speed-dial close with outside click in firefox not working

[HendrikWansing]

If you click on another DOM-Element than md-fab-speed-dial it closes the speed-dial in chrome but not in Firefox. I assume it should close the speed-dial in Firefox, too. This bug is reproducible in your demo.

If you click into an input field with open speed-dial, it prevents typing spaces.
fabSpeedDial/fabController.js line 230:
case $mdConstant.KEY_CODE.SPACE: event.preventDefault(); return false;