By any chance do you have a segment applied to the panel that might be causing an issue...
I find it strange that there are entries, but no exits from your page in the middle... I suspect there are a number of users exiting the site from that page, but there is a segment applied that is preventing it from properly showing in the diagram?

The little green spot at the top left of the page is entries, normally there should be a corresponding "exits"

Update: I should add that a segment could be causing a lot of different oddities with how this is displaying... when I try this, my totals line up... so I don't think it's an inherent issue with the flow diagram, but something on top that is resulting is less than desired results....