Package: x2goserver
Version: 4.0.1.20

the Composite XServer extension is currently unsupported. Please fix.
> Some info here: https://wiki.x2go.org/doku.php/wiki:development:roadmap?s[]=composite#first_attempt_at_documenting_missing_nx-libs_features_for_certain_applications_and_desktop_environments

P.S. Might be good to make a metabug for all unsupported XServer extensions