add Route to an existing route tends to layout a bit wrong leading to an odd layout

To replicate:

• create a new Fuse Project, spring-camel
• open up the camel-context.xml
• right click on an empty area of the diagram outside the sample route and Add Route
• route icons have become tiny

I found something similar; but making the route rectangle huge for the current route.

Maybe we can just miss out a call to auto-layout the graphs when adding a new route (though the problem will resurface if you hit the layout button after adding a new route).

Seems somethings a bit wrong with the layout logic.