Using IDV v1.3a4 (though it bills itself as v1.3b1) I've encountered
another possible bug, at least on the Mac (in particular, on both of the
Macs that I've tried so far, both running OS X 10.4.3).
Using drawing control, I can draw line, rectangle, diamond, and waypoint
shapes just fine, whether I'm viewing an image in it's original (unzoomed
and unpanned) state or in a zoomed (in or out) or panned state. However,
smooth polygon, polygon, and text seem to work only when I'm viewing an
image in its original state. In a zoomed and/or panned state, the cursor
draws nothing when I've selected text or either polygon from the shape
icon-menu, while the other four shapes continue to draw OK regardless of
the view state.
Restoring the original view after panning and/or zooming reenables drawing
of all shapes.