Flow not working correctly when adding a new lines

Hi there,

I am creating a live chart with multiple line charts.
Incoming data is flowed to the chart, but when a gap is detected (no values on the X where it's expected), I split up the data into multiple linecharts. These should draw after each other, with a visible gap.
So for the first point after the gap, I use chart.load to set up the new line.
I use chart.flowfor the points that follow until the next gap is detected.

Here's a fiddle that shows the problem. The lines are not rendered correctly.
Is this a bug or am I doing something wrong here?

https://jsfiddle.net/ur0opgoe/31/