After upgrade to Monterey, "Save" and "Save As" don't work when Sidecar is being used
Since installing Monterey today, I am seeing some odd behavior on some of my apps.
In all apps I have tried (Apple and Adobe apps) I can't save files with either "save" or "save as."
Strangely, it only acts that way when I am using Sidecar to support an iPad as a second display.
When I disconnect Sidecar, and quit / restart the affected app, it goes back to normal.
Mac mini, macOS 12.0