For me this only seems to happen with a complex figure (Jessi) plus conforming clothing and the Winter Queen wings all loaded, then the render settings in the 'auto' window turned up as high as possible - i.e. the slider all the way to the right. Moving it one notch left kills the bug, but I suspect it would come back if another figure was added. The bug only appears when I try to render the scene, so it isn't an OpenGL problem, for example.
2Gb machine with nvidia GeForce FX 5600 XT with 128 Mb on board memory (I think).

Steve