Cosoms Xpress - Part transparency - bug or not

I have noticed that in 2008 SP0.0 I do some analysis isCosmos Xpress, when I exit this the part I have been analysingchanges to 50% transparency.

I then have to go in to the colours option and reset this, this isnon repeatable, sometimes it happens, sometimes it doesn't. Hasanyone else seen this behaviour? Not sure whether to report it as abug or not.SolidworksGeneral