Geoff,
I've only seen this once on version 5 and it was on a chart with volume as the only indicator, same as Tresor posted above. How can the the price scale be switching, volume cannot decrease as the data comes in?
Your argument is absolutely relevant. When I analyzed the Tresor’s screenshot I couldn’t find explanation too. It is obvious the volume just increments. The only possible scenario is a short bar (1 sec, 10 Ticks or 5 Volumes), but it was not a case.
So if it still trembles we need to investigate it more. IF you have it create movie with a free SWF recorder for us. Maybe we will find an explanation. So far we have no answer.
BTW, I've always been trying to work out how to get rid of the .00 and the end of the volume as you can't buy or sell a hundredth of a contract is that possible?
Yes, MultiCharts 5 has a special feature. See Volume->Edit Study->Scaling->Number of decimals. It allows you to set preferred number of decimals. By default we get number of decimals from base data series price scale.