To have some sort of text wrapping, I use the label properties:
Placement: Internal, Center
Size: Fit Node Width
This works fine on rectangular nodes, however on non-rectangular nodes the label will protrude the node shape/size. This is particularly bad with the cloud node in which the node size seems too big a lot bigger than the node graphics, but it is an issue on all (or many) non-rectangular nodes.
An option to make the label fit inside the node (and here I mean inside the actual graphics) would be great. (Or help to actually do this now if possible, would be even better :-))