Data disappearing from chart when history length is reached

[peper2001]

Hi everyone,

I have a chart with multiple waveforms sampled at relatively high frequency (51200Hz). I don't want to allow the user to display too much data on the chart because then the chart becomes very sluggerish and CPU usage gets very high. 

So I thought I would reduce the chart history length in order to display maximum 4s of data on the chart.

The problem is that when the number of waveform blocks sent to the chart has reached the number ob blocks defined by "chart history length", some plots simply disappear from the chart ! Which seems to be a Labview bug to me.

I use Labview 2016.

I have attached a vi reproducing the issue. 

1) Do you also have the issue?

2) Do you have a workaround?

3) Anyone using Labview 2017 can tell if this bug is still present in the new Labview version?

Thanks,

regards

[peper2001]

I should add that the issue mentionned above occurs when the chart is in "strip" update mode.

[peper2001]

FYI

This behavior seems to be the same in LV 2017 with certains levels of zoom