All these problems stems from the recent changes in the collection hierarchy. Somehow, the order of elements are not preserved. Here is an example:

Consider the script:

view nodes: (1 to: 4).
view edgesFromAssociations: {1 -> 2 . 1 -> 3 . 3 -> 4}.
view treeLayout

It displays this:

or this:

Before the recent collection changes, it was always the same layout, one of the two. So the tests need to be updated...

The build should be green again

Cheers,

Alexandre