One more problem: if you switch away from the viewer (in full-screen mode), it'll change whatever it's showing with something it was showing earlier (this also happens if I move focus to a window on another monitor, just leaving the viewer where it was, with no other window obscuring it).
One more problem: if you switch away from the viewer (in full-screen mode), it'll change whatever it's showing with something it was showing earlier (this also happens if I move focus to a window on another monitor, just leaving the viewer where it was, with no other window obscuring it).