CTRL-Tab Usage

Can anyone explain to me or point me to the correct helptopic to figure out how the ctrl-tab feature now functions?
Up through SW 2007 the ctrl-tab just cycled through the opendocuments in whatever order it had them sorted.

Now that I'm using SW 2008 it brings up the window with previewpanels. Good idea, but it seems to force me to either mouse clickor arrow to the one I want. Otherwise, when I release the keys itsometimes cycles through, other times it just keeps bringing up thesame document, or cycles through some but not all of the documents.

DonSolidworksUser Interface