@jailangoju,
Thanks for the reporting the use-case. We will look into it further, understand the scenario better and get back to you at the earliest. Meanwhile, you can overcome this by setting y-axis interval to a value, 1 in this case. Please find the code-snippet below.
axisY:{
title: "Axis Y Title",
interval: 1
}
Also, please take a look at this updated JSFiddle for working code.
—-
Manoj Mohan
Team CanvasJS