Programmatically select non-first tab before displaying first tab

SmartGWT 4.1 / Firefox 17

I have a top-level TabSet containing an inner TabSet with 2 tabs.

When I programmatically selectTab on the 2nd tab of the inner TabSet, the contents of the 1st tab is displayed above the contents of the 2nd tab.

You have to manually select the 1st tab to correct it.