I can screenshare both of my monitors, google chrome windows
When I screenshare my console or other apps (like Visual Paradigm IDE) - others just see a black screen
➜ /tmp loginctl
SESSION UID USER SEAT
3 1000 dmitry seat0
c2 42 gdm seat0
2 sessions listed.
➜ /tmp loginctl show-session 3 -p Type
Type=x11
➜ /tmp loginctl show-session c2 -p Type
Type=x11
➜ /tmp gdm --version
GDM 3.22.3
➜ /tmp cat /etc/gdm/custom.conf G wayland
5:# WaylandEnable=false
➜ /tmp