I tried to recreate this on a MacBook running Leopard with OS and VW 2008 up-to-date. I switched using Command + Tab and it didn't work, but indeed when I clicked on the VW icon in the Dock, VW opened a new blank doc. That's messy...
On a possibly related note, is it possible to have VW launch without opening a new blank doc, or maybe specify a doc to open? I'm sure most people usually work on existing docs much more frequently than starting new ones.
Thanks.