Route building - issues

I have issues building my VFR routes on the map. The Navigraph video shows that the route needs to be clicked (double-click) and then I should see a new turning point and be able to move it. Unfortunately, the only thing a double-click does for me is - zoom in.

To make a new turning point I need to hold shift and then double-click moving the mouse at the same time. Seems like a very weird design or a bug.

In every other flight planning software, this worked intuitively.