3D app reboots the guest OS if display is scaled

[Sophie]

Only tested with a Windows XP guest:

If VirtualBox is in Scale mode (Host+C) with 3D acceleration enabled, and a 3D app (in my case, StepMania 3.9a) is launched, the guest OS spontaneously reboots.

Obviously, it would (probably) be quite difficult for VirtualBox to actually scale 3D accelerated output, so I'm not asking that this be made possible. Instead, it should probably stop the guest OS from creating the surface in the first place and return the same as it would if 3D acceleration were not enabled.

(And if you want to know why I installed StepMania in a virtual machine, I was curious as to what the embedded OpenCandy code in the installer would do to the machine. I wasn't seriously wanting to play it. And then I was curious as to how it intersected with Scale mode, and bang, here's the bug :))

My host OS is Windows 7, with up-to-date drivers for my ATI Mobility Radeon HD 5650, and with Aero enabled, and I'm using VirtualBox 4.0.4.