Actually, just discovered 3 more minor but nonetheless buggy behaviors that caused extraneous pdtk_canvas_getscroll calls as well as console errors (thankfully these were not show-stoppers). Now pd with or without debugging should output no errors to the console (at least not using vanilla objects).
NB: for the 0.43 devs this has also resulted in a change to the pdtk_canvas_getscroll function requiring another alteration to the new scrolling algorithm patch-bundle I submitted to the Sourceforge a while ago.
Re-uploaded version now available.
Happy Thanksgiving!
Ico