The axisX (vertical) axis in bar charts shows a »1« on the top if there is only one bar with a label:
http://jsfiddle.net/dombn/Lak7s/2/
If you add a second bar (remove comment in jsFiddle) the »1« is gone, imho like it should be.
Or is there an option for that which I didn’t found?
Best regards
dom