How to stop Preview's pen from turning into a hand?

I want to draw a couple lines when annotating a PDF with Preview. But, when I get close to the first line, the tool automatically switches from a pen to a hand. For example, if I try to hand-draw the symbol ∀: 1. Draw a V 2. Try to draw the - part 3. NOPE - Preview switches from "pen" tool to "hand"/grabber tool, and *moves* the V instead Is there a way to turn off the hand tool so I can draw normally?