Long label intersects box
digraph test {
"N1" [label="Some long text", shape=box];
"N2" [label="Some text", shape=box];
}
and
dot -Tsvg test.dot -o test.svg
result in
As you can see, the longer label intersects the box. Adding fixedsize=false
did not help.
As far as I can remember, this worked (i.e. the box was always made large enough to contain the label) before I upgraded to Ubuntu 18.04. I don't remember my previous GraphViz version, but I'm currently running
$ dot -V
dot - graphviz version 2.40.1 (20161225.0304)
That seems to be the latest stable release.