Installed latest release of enterprise-server-362_2 and terminal-node-362_1 (enterprise-node not available for download anymore?) and it works now. However, I noticed it is sensitive on the way a node has been added on the machine running the nx server – needs to go as localhost, not as hostname.
Also: available desktops still show physical desktops although they’re removed and EnableVirtualGL doesn’t work (there’s VirtualGL install and configured and manually with vglrun applications run fine).