Spacing problem in layouts other than Dagre

[leandroberetta]

In layouts other than Dagre, it seems that the spacing between nodes and groups are wrong, is like the size of them is not taking into account well:

It should be nice if groups don't overlap as in Dagre:

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Jira Issue: PF-2002

[jshaughn]

I think this is just the fact that these layouts don't support groups.