Init multiple editors without html option: textarea contents could get overridden

Actually I have 3 textareas, with different ids and different texts inside. However when I instanciate wym editor every textarea content gets filled with the first textarea content. It does work well with 1.0b3 but not with b5
I'm confused. I don't see any difference at all here between the browsers and the order in which these things take place. What am I missing and why does that stop you from making this code:
```
wym.iframeInitialized = wym.initIframe(this);
wym.postIframeInit(this);
```