Moving multiple items

The Quick Start Guide for Scapple says:

“Drag note to move them around. (To move multiple notes, select them before dragging.”

“Click on a note to select it, or click and drag outside of a note to create a “marquee” rectangle that
can be dragged to select multiple notes. Ctrl-clicking also allow you to select multiple notes.”

When I click and drag outside of a note and create the marquee rectangle, an area turns blue. Then when I release the left mouse button I lose the marquee rectangle and I can’t drag or align boxes, etc.

Is this a known bug? Or, evidence of my inferior Windows skills?

When you click and drag to select the notes to move, a blue box is made. On mine, the notes are then highlighted in blue. You can then click on one of the notes and move all of the selected ones around.