Zero value not shown in InfoChart DS 1.6

Hi everyone,

we are having a problem with the display of zero value in InfoChart, the value is not shown in the chart at all. For Colum or Bar Chart, the problem is unrecognisable, because a column or bar with zero value is invisible anyway. However, when we turn the chart to a line chart, the non-display of the zero causes a gap in the line. In the attached image, you can notice it on the green line.

My question is, is this an intended feature or is this a bug? If so, how can I remove it?