Maintainers for libxcompext3 are X2Go Developers <x2go-dev@lists.x2go.org>.
You may want to refer to the following packages that are part of the same source: libnx-mesa-extras-dev, libnx-x11, libnx-x11-dev, libxcomp-dev, libxcomp3, libxcompext-dev, libxcompshad-dev, libxcompshad3, nxagent, nxauth, nxproxy, x2goagent.
You might like to refer to the libxcompext3 package page, or to the source package src:nx-libs's bug page.
If you find a bug not listed here, please report it.