I tried your sampe with latest 4.1.0-SNAPSHOT and it works perfectly. I'm not able to try it with 4.0.0.Final because Maven repository is down at the moment.
How did you use the page? I tried both ui:decorate and ui:include
this is true. I tried to open the page "as it is". Without <html>-Tags. With them (html, head, body) it functions.
Now I have to find out why this happens in my bigger application. I use the rich:dataScroller inside a composite-component. And there, the same thing happens. The scroller is rendered, but is not functioning.
I have to find out now, where the problem is.
Thanks for your answer.