Maybe Terje has tried this recently.  He did test a little as noted in:
    https://www.cinelerra-gg.org/bugtracker/view.php?id=122
but he mentioned Wayland and not Xwayland.

I would really like to know the answer to this too!

On Tue, Feb 11, 2025 at 6:15 AM Andrea paz via Cin <cin@lists.cinelerra-gg.org> wrote:
My curiosity:
I don't use Wayland because I have a widegamut monitor and use a color
space greater than sRGB. I was wondering how CinGG works on Wayland,
or rather, on XWayland. Has anyone tried it? I am mainly referring to
the color part, but also the performance.
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