@scompliance,
Thanks for reporting the use case. This looks like a bug & we will fix it in the future releases. Meanwhile, you can work around this by setting a relatively smaller y-value to the datapoint instead of setting it to 0 as shown in the code-snippet below..
{ x: 10, y: 0.2, indexLabel: "0", toolTipContent: "{x}: 0", highlightEnabled: false, /* color: "transparent" */}
Please take a look at this updated JSFiddle for the working example of the same.
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Sachin Bisht
Team CanvasJS