package: x2goserver

Good evening. I have a server with Ubuntu 16.4 where installed your x2go server.
Few day aga i update x2go server, this update led to the problem with fullscreen window. When window resixed in fullscreen mode it become twitch.  I recorded video with this problem. I install clean ubuntu and install x2go server, this problem on this server too.
i apologize for my english
please help me.