I am making a flowchart, and it contains several group nodes. If I run the "Flowchart layout" command from the top-level view, some of the elements within a group node sometimes get assigned strange layouts, with edges that are give far too many wiggles. If I then enter that group and run the layout command, it reverts to a more sensible layout, although sometimes then when returning to the parent level, this group now overlaps other nodes.
The auto layour feature is very handy, but this aspect is somewhat irksome, and it would be nice if it could be fixed. I guess it wants to work heirarchically, i.e. layout each group node individually ("deepest" first) and then when stepping up to higher levels, treat the group node as a block, rather than re-arranging its elements again.