I have seen that behavior since the first Catalina beta both staring up and shutting down. The only way I found to stop is was to change my desktops to Catalina. 🤷‍♂️

I have also encountered an annoyance where the system seems to lose track of the exact position of the edge of the primary display and the desktop will track the cursor ¼" or so left or right between the two monitors. So far, this has not occurred in 10.15.4 beta 4 🤞


"All you've got to do is own up to your ignorance
honestly, and you'll find people who are eager to
fill your head with information"
--Walt Disney