The reason sense will be behaving like this is due to its responsive layout. If you think about it this chart can be viewed on anything from a pc down to a phone. At phone level you can display only a small part of the chart to the user by default. As such as you have set a total for your piviot it's positioned to give the user the full picture then you can scroll across for the detail.
It takes some getting used to but there is a method to the madness.
Hope this helps explain why it's presented as it is and no you cannot change it through config.