I think i found a bug about coordinaces, there some pics you may want to see:
This layout:
<img src="http://i.imgur.com/1clU8.png" border="0" />
HTML Result:
<img src="http://i.imgur.com/RbjYj.png" border="0" />
Other unusual fix layout:
<img src="http://i.imgur.com/ObSqe.png" border="0" />
HTML Result:
<img src="http://i.imgur.com/v3qmy.png" border="0" />
I'm using chrome