Clicking on whitespace in a graph to move it around deselects all selected items

[kixxalot]

Clicking on whitespace is necessary for moving the entire graph around.
However, a click on whitespace also results in undoing all selections.

So currently it is impossible to move the graph while keeping your selections intact.

[G4br13l3]

This is the expected behaviour, you can move the graph keeping the selection by using the pan-zoom controller at the top left in the graph widget area.
Btw, we can keep in consideration your suggestion, maybe allowing users to lock/unlock the current selection.