TabSheet setSizeUndefined not work

Yes, it will work - but there is a problem: Vaadin (or GWT?) creates a div without id and without class. So the only way to set the width with css is


.v-tabsheet-tabsheetpanel div {
    width: auto !important;
}

And now I’m not able to set the width of any child.

Another problem is, if I use setWidth on TabSheet, the Tabs aren’t use the full size. why?

Greetings
Torsten