In a quiver plot with ShowArrowHead = 'off', how do I keep the arrowhead from displaying in the legend as well?

Question

When plotting with quiver() and setting the 'ShowArrowHead' property to 'off', the arrowheads aren't shown in the plot (as expected). However, the legend entry still shows an arrowhead.

I would expect the legend for this code block to not show an arrowhead.

[X,Y] = meshgrid(-pi:pi/8:pi,-pi:pi/8:pi);
U = sin(Y);
V = cos(X);

q = quiver(X,Y,U,V);
q.ShowArrowHead = 'off';
q.Marker = '.';
legend()

Quiver plot showing the marker at the base of the line (as expected), but an arrowhead as well which should not appear