Prior to RC9, when I brought up the Scratchpad it always opened in the monitor where I last had it open (this is still the case, BTW), but it also used to remember if I had resized it, I seem to recall, which is no longer the case.
If anyone wants to know, I much prefer the previous behavior since—lacking a maximize button (I’m guessing that’s because too many people lack more than one monitor, and maximizing the Scratchpad would just get in the way?)—I’m always resizing it on the other monitor to fill the screen. The Scratchpad is just more useful to me full screen.
As an aside, it would also be great if it recalled text zoom percentage, but that just seems greedy.