This is due to a PhoneGap bug that fails to resize the viewport properly (and absolutely positioned elements don't resize properly). We fixed it in BB7+, however it seems the fix doesn't work in 6.x, where the bug is even worse. I've fixed it and the fix will be available with the next internal build and the service pack. However the fix is only partial - rotating the device to left/right doesn't properly update the viewport to fit the app in it. the only workaround I can think of is to stop device rotation for BlackBerry 6.x in PhoneGap. You can do this by adding the following row in config.xml:
I also updated your points for the find.
All the best,
the Telerik team
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