I'm not sure how the option is called in the English version, but you might get what I mean. The option to restore a session doesn't work for me, actually it disables itself automatically.
Here's what I did:
- Activate "Restore Session" in the settings of an server entry.
- Connect to the server.
- Change to fullscreen.
- Disconnect from server while in fullscreen mode.
When I try to connect again to the server it still opens up in non-fullscreen mode. When opening the settings for the server entry the "Restore Session" option is disabled again.