First GoView node not centered middle top

In the previous version 2.4 the root GoView node was centered at the top in the middle. When we upgraded to 2.6 the node was centered top left. We would like it to be top center middle again. We tried ScaleToFit and this positions the node in the top left core. And we also tried ScaleToFitWithCenter and this middle centers the node for a diagram of 1 node. How can we get the first node to be centered top middle?

Are you specifying a particular position for that node?

Are you specifying the document Size and TopLeft properties? What about relevant GoView properties?