Why do nodes of graph jump away after computeFigure()?

asked Feb 20

Arjen
13 ● 2 ● 4

Trying to visualise a FSM, I stumbled on unexpected behaviour of a graph. I've put the graph in a loop and want to highligh the active state.

return computeFigure(
    bool () {
        bool recompute = runState() != current;
        current = runState();
        return recompute;
    },
    Figure () {
        return buildControllerGraph(ast, current); 
    }
);

At random the nodes jump around, sometimes correctly aligned at the center, sometimes aligned left from the center.

Okay:

Unexpected:

Also tried latest SVN, not working.