Package: x2goclient
Version: 4.1.2.2-2020.02.13

Similiar to this old bug https://bugs.x2go.org/cgi-bin/bugreport.cgi?bug=1225 ProxyJump is ignored under windows.

However, the underlying libssh 0.9.3 now supports ProxyJump and at least in ubuntu 20.04 it works out of the box. This is especially frustrating as host certificates are not supported in libssh which currently blocks any config in x2goclient that directly configures the bastion host as proxy (kex exchange method unsupported).