Package: client I am using x2go client v4.1.2.0 (but saw same issue with 4.1.0.0). I start a connection to a Linux host (Knoppix v7.0.5) using LXDE session type and fullscreen display. Client host is Windows 10. After the fullscreen client is displayed, I cannot access the x2go menu bar (at the top, center of the window, owned by x2go). I move my mouse to the top, but it does not appear. The alt keys for switching out of fullscreen mode do not work either. Only method I have found that works is Windows alt-tab key. This change in behavior just started recently, and AFAIK, I had not made any changes to client or host x2go. I did upgrade to latest x2go client (to see if issue was fixed), but that did not change the behavior. I have tried this from 2 different client hosts (other was Windows 7), and 2 different target hosts. All behaved the same. I would have sent the configuration file, but it is not obvious what file that is. Would be useful if you added more details on how to find/identify this file. Is this a known issue? Is there a workaround?