Package:  x2goclient

my x2go server run on LXDE server, all ok. My client is Cinnamon,
When I start all is ok, when I minimize the window, clicking in the top right, the windows is minimized, but it's dimension become about 2x25 pixels, so even I restore, I can't see anything and I can't maximize it anymore.
I made a screenshot, it's that sort of capital I in the center of the screen.
My Cinnamon version is 3.4.6
My x2goclient is

Best regards