I don't know which SDK has introduced the problem, but this piece of code:
dc.drawArc(190, y, 8, Gfx.ARC_CLOCKWISE, 90, deg);
created just a narrow line of an arc if deg is 89. Now this statement creates a full arc. The same is valid for values 88 and 87. At deg=86, the arc is drawn as expected. The code worked pretty well, I did not change anything but now the full arc is drawn :-( Is this a bug introduced with one of the latest SDK versions?
