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Looks like Discord finally fixed Linux screen and audio sharing with Wayland
(www.gamingonlinux.com)
For when you want to flip every table in the known universe.
i like cinnamon far too much to switch to gnome or kde for something like wayland
AFAIK, Wayland is still WIP on Cinnamon. But you could try out one of those to see if Wayland solves your problem, and if it does, you could try out betas or something of Cinnamon to help it move along.