Yes, the RadTabControl was modelled after the AJAX RadTabStrip where there was an IsBreak property. Still, the layout is managed by a Panel and they are interchangeable.
We have been thinking about providing an alternative panel, but there haven't been enough requests about this.
As a workaround I created an example where there are two TabControls with changed panels, on the left there is the WrapPanel (which behaves like the TabControl with align: left) and the other one is the default TabPanel, used in the standard controls.
This way of course not everything will work - the IsBreak property + the item aligns will stop functioning but it really depends what functionality you need.
Thanks for the feedback!
Hopefully this will work in your case,
the Telerik team
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