There appears to be a bug with globals where you cannot duplicate them within the node browser using the dropdown menu.
Also while trying to create a duplicate of a globals by doing and OPTION-Drag, Elements crashed and I had to force quit. This happened after I attempted to do a duplicate from the dropdown, which causes nothing to happen.
This has worked in the past, so I’m not sure what went wrong here.
When you do a duplication with OPTION-Drag the newly created global will lose it’s title. This is a problem I have encountered a lot in the node browser where duplicated items will lose their title. Sometimes they come back after the project has been closed and reopened. But not always.