ZK - Open Source Ajax Java Framework

I am quite new in ZK and i have to admit i like it a lot. I am using eclipse 3.5 (galileo) and ZK 3.6
I am designing a ZUL with multiple tabpanels and in the visual editor i can see the contents only of the first tab. While in the visual editor i cannot click on any other tab and see it's contents. The only way to see other tabpanels is to set them as the first tabpanel in my zul file.
Is this the normal behavior or am i missing something?

That's only an editor for helping by the layout. You can post a feature request.

As a workaround, add selected="true" to the tab panel you are working on.