I just upgraded a dual screen workstation from 20.10 to 21.04. I use this workstation via remote desktop very often. After the distro upgrade, I noticed that the remote desktop connection interrupts when the workstation screen goes blank. When the screen is blank, no remote desktop connection is accepted by the workstation (no lock screen is enabled only the blank screen feature). Moreover now only one of the two screen is shared remotely, while before the remote window contained both screens.
Question: is it a bug or is there a tweak somewhere restoring the original (20.10) behaviour? Should I install a independent screen sharing server and not use the gnome default one?
Thanks in advance.
Note: In the login page I can choose among two window manager: Ubuntu (default) and Gnome Flashback. With the latter the remote desktop sharing option is not even present.