The bug can be seen under https://canvasjs.com/docs/charts/chart-types/html5-bar-chart/ . If you change the Y value for any of the bar charts to Y{1} the bar disappears off the Canvas. The lowest number I found in order to make the bar chart appear is Y{2}. Also, noticed that Y{0} doesn’t get represented. I think it will be better if Y{0} get’s highlighted with a colour.