Display problem on Symbian fullscreen in landscape mode with WindowSoftkeysVisibleHint

On Symbian WindowSoftkeysVisibleHint can be set to make soft keys visible in full screen mode.
While this works fine in portrait mode, it does not work well in landscape mode at least on Symbian FP1:
In the area left to the soft keys the widget is transparent and the home screen is displayed.
(see screenshots)

This can also be reproduced with the widgets\softkeys example in the Symbian FP1 emulator, by switching to "fullscreen with softkeys" mode
and changing screen orientation to landscape.

Apparantly this problem does not occur on Symbian 5th edition.