If the Windows taskbar is not set to auto-hide and the runtime is being started in fullscreen mode (set in "Project" – "Graphical design" – "Runtime title"), the taskbar is still visible.
An issue was addressed in the runtime itself which did not allow the runtime to have a larger mainframe than the work area size of the monitor. Now, the runtime is started in fullscreen without the Windows taskbar being visible.
Fixed on 25.04.2012, available from 7.00 SP0 Build 1