Qt plotter funnies...

Greetings all,

I'm using IC6.1.5.500.4

I'm seeing some behavior where the plotter isn't plotting what is assigned to a variable correctly.

For example, if I type the following into the CIW and execute it, I get two sine-waves 

a = getData("/out") ; a single sine-wave period over 1nS
b = sample(a 0 1n "linear" 250p)  
newWindow() 
plot(a b); plots two sine-waves

If (for example) I then put the following in the CIW (single copy and paste):  
a = getData("/out")
b = sample(a 0 1n "linear" 250p)  newWindow() 
plot(a)
hiRegTimer("plot(b)" 30); 

This produces the expected sinewave and triangle wave

However, if I then type : plot(a b); I get the incorrect two sinewaves plotted again!
If I type in:
  plot(a) ; hit enter
  plot(b) ; hit enter

This produces the correct plots again.

I tried this with awvPlotWaveform() and got the same results.

It's as though the Qt plotter can't handle two waveforms in the same plot command that have different x-axis number count. And you can't call the commands very quickly without confusing the plotter.

I found that if I switch back to the Java plotter, this doesn't appear to be an issue.

 Is this a known bug? Is there a work-around?

Thanks,
Mark