Kepler

When dragging components around on the canvas, the drop area is too small so it's hard to get components to go where they need to go. The mouse cursor changes to the green plus ("+") icon, which I think is not the right icon to use. That cursor indicates that something is being added, which it's not. It's just being moved.

The size of the drop area should be increased and the mouse cursor should not use the + icon.