Just upgraded to Mavericks. I used a two-monitor setup and I keep several PS panels open on my right-side monitor with my main work area on the left-side monitor. Before Mavericks the panels would stay on the right monitor even when switching between apps, "Spaces" or different desktops. Now with Mavericks, every time I switch away from PS and switch back, or switch between desktops, the panels jump back over to the left-side monitor. If I "reset" my workspace they hop back over to the right-side monitor where they belong but this is annoying me to death having to do that every time I switch back and forth between apps/desktops!