I have a large graph with several group nodes. If I double-click to edit one of the groups, which is quite small, and click the toolbar button "Back to the previous view", I am returned to the parent graph view, but I can only see a small section of the parent chart and the scoll bars do not allow it to be scrolled all the way to the edge.
The work-around is to then click the "Show entire graph" toolbar button followed by the "Reset the zoom level" button.
It would be better if the scroll bars reset correctly when returning from a sub-chart.