It happens in Windows 7 as well, I can attest to that. It's also sporadic. Sometimes it occurs, sometimes it doesn't.
Just that. I assume that you have experienced this problem as well or maybe you've seen the problem elsewhere, if so, have you been able to fix the problem?
Yesterday I launched SC4 after a cold boot and the glitch was present. This morning I launched SC4 after a cold boot and it wasn't there. It's a crapshoot it seems.
Edit: I'm running under hardware with an Nvidia Geforce gtx 260m at high settings with latest driver.