I have the same issue as @sjenkins
Not sure if this is exactly what you mean but I opened the nodes screen in eisy.local, selected a non Yolink node (shows properties correctly) then selected a Yolink node (no properties shown) but I do not see any error message
Not sure if this is at all related but I notice when I add in a Yolink node server, the Yolink devices show up scattered among all existing nodes in the AC. That is, they are not automatically grouped under a Yolink master node