I just realized that something's wrong in NX 18.104.22.168.
During post processing I want to create a graph in a new window, to see the model and created graph in new window (new floating window, not in a shared screen with few wiewports). When I choose the viewport it is ok, the graph appears as it should, but when I choose new window, the graph is clean. even axis does not appear.
Is it a matter of some display settings or just a bug in a software ?
I've not seen that behavior before. Could be a graphics issue. Are you running the certified driver for your card?
I would recommend contacting GTAC
Yes, I use certified drivers for my graphic card. It is not so powerfull but it works normally during work. And as you can see the graphs are displayed in viewport.