Comment 3 for bug 720260

Reproduced with Inkscape 0.48 and 0.48+devel r10053 on OS X 10.5.8 (i386)

Oddly, if the left arc handled is dragged with 'Ctrl' towards the center of the ellipse [1] - without changing the 180° angle - the end marker is displayed correctly (though none of the values in the XML Editor have changed).

[1] used to toggle between arc (pointer drags inside the arc) and segment (pointer drags outside of the arc)