Most of my projects (created in Sonar) contain several instances of PRV docked in the undocked Multidock, each displaying a different single softsynth or otherwise some combination of midi tracks. I also have a separate screenset dovoted to drums with a PRV displaying the drum pane. This makes it easy to quick switch back and forth between editing different softsynths. With a single click I can resume editing drums and with no more that two clicks I can go to edit any other softsynth.
But this doesn't seem to work in CbB. Whenever I switch to another screenset and back again, the PRVs all become reset. Apparently they all revert to the settings of whichever one was last viewed. So having multiple instances become pointless as they are all identical. Sometimes they all display the drum pane when the drum pane is not appropriate. It's a mess.
I hope this gets fixed soon. Meanwhile I'm sticking with Platinum.