I installed the update to Ventura 13.3 yesterday. I have an M2 Mac Mini with a 3330x1440 main monitor, and I am also using a ViewSonic 14" display I normally use with my laptop. Today I noticed that the Aerial Screen Saver was only showing on the small monitor. The big monitor has a blank screen.
I also tried Electric Sheep, which I haven’t used in a couple of years, but it has the same problem. I tried reinstalling the screen saver and other troubleshooting with no luck. I asked about this on the Aerial discord server, and I see a number of other people with the same issue (including people with only one monitor). The Aerial Devs have been responsive in the past so maybe I’ll get more info. Wondering if anyone else is able to confirm this is a macOS issue, or what else might be going on?