DataZombies Tabbar stays fixed over wiindow when iPhone browser search bar disappears

I think the subject line says it all.
When I navigate to my app page, the iPhone browser shows the tabbar at
the correct position along the bottom of the window.
When I go to a new panel and come back to the homescreen, the iPhone
browser search bar is gone and the Tabbar has moved up the same number
of pixels.

The tabbar ends up covering a portion of the window and only bringing
the search bar back 'fixes' it.
I don't even know where to start looking to solve this