Using a transform breaks subpixel positionning

[paulrouget]

If an element has a transform (transform:scale(1) for example), its coordinates are rounded (top:11.5px becomes top:12px).

<div id='d1'></div>
<div id='d2'></div>

<style>
  div {
    position: absolute;
    top: 11.5px;
    width: 100px;
    height: 100px;
  }

  #d1 {
    left: 100px;
    background: green;
  }

  #d2 {
    left: 200px;
    background: red;
    transform: scale(1);
  }

</style>

Note the green div is a bit higher than the red div:

[paulrouget]

I have a fix coming up.