Hi,
I am using ArcGIS Earth 1.6.1. I have a big tree structure in the layer list, with more than 3 levels of nodes, with sometimes more than 40 children at level 2, and when I try to collapse all using the contextual menu on a level 1 node, and then reopen the node, only a few children did actually collapse. On the other hand the expand all feature works as expected.
Kind regards,
Serge