title: JavaScript: space keydown sometimes not detected with multiple keypresses
body: <p>While working on a little gameengine, I noticed that sometimes space keydown event isn't triggered in some cases.</p>
  
  <ul>
  <li>When keeping left arrow key down, and pressing space, it works</li>
  <li>When keeping left and up arrow keys down, then pressing space, it doesn't work</li>
  </ul>
  
  <p>The weird thing is that when doing the same test with right and up arrows down, and pressing space, it works.</p>
  
  <p>Same thing happens with Chrome &amp; Firefox on Windows. It seems it works as expected in MacOSX.</p>
  
  <p>See: <a href="http://jsbin.com/takiyekudu/1/" rel="nofollow">http://jsbin.com/takiyekudu/1/</a></p>
  
  <p>Anyone knows why it doesn't work and has an idea how to workaround this bug ?</p>