Probably not the correct place for this, but pre-sales support is not much help since I have not done the 30 day trial (not ready) and they are unwilling to agree that this is an issue and deal with it appropriately. I do not think they know what pre-sales means.
If you go to PivotGrid/Remote Binding demo in the ASP.Net MVC section. Expand Mexico and then collapse it. Expand Germany and look at the totals, they are incorrect at this point. Refresh the page and the totals look correct. If you expand Germany and then Mexico they look okay until you open something to the right and then open something on the left of that right open.