KDE taskbar overlaps fullscreen WinXP guest when switching to it with mouse click

[Dmitry Grigoriev]

Host: Gentoo Linux x86_64, KDE 3.5.9, VirtualBox 1.6.2_OSE. Guest: WinXP SP2 with VirtualBox Additions installed, mouse integration=on, fullscreen=on, autoresize guest display=on.

To reproduce: =============

0. Ensure you have multiple desktops in KDE, Desktop preview applet on taskbar, and hotkeys to switch between desktops (I use Super+F1...Super+F4).

1. Open WinXP guest on a separate desktop in fullscreen mode (I use Desktop4).

2. Press right Ctrl, then switch with keyboard to another desktop (I press Super+F1).

3. Switch back to WinXP by mouse-clicking desktop4 in desktop preview applet on KDE taskbar. You'll get fullscreen WinXP but still visible KDE taskbar.

Screenshot: ​http://dimgel.ru/misc/virtualbox-fullscreen-bug.jpg

Notes: ======

1. If you switch to desktop4 with keyboard (Super+F4 in my case), it will be ok.

2. To hide KDE taskbar, I press right Ctrl+Q (shutdown dialog), Esc (cancel shutdown dialog).

3. VirtualBox 1.5.x was ok (I don't remember exact version, probably one still last unmasked by Gentoo maintainers; I unmasked 1.6.x manually).