Problem description: since screens were moved to dashboards, the parameter width in graph configuration form doesn't really impact anything, since in Monitoring => Hosts => Graphs the graphs are being stretched to fit the width of the screen and in dashboard widgets the graph is stretched to fill as much space in the widget as possible.{}

Parameter "Height" impacts only the height of the graph in Monitoring => Hosts => Graphs. Apart from that, both of these parameters impact the graph in Graph preview, which, as can be seen from the above described situation, is misleading and does not show the real graph dimensions.