I want to edit the cmis:name of a document in CMIS Workbench, so I selected the document, opened its Properties tab (left window in the screenshot below), and double-clicked on cmis:name.
The Property Editor showed up (right window in the screenshot below), and surprisingly to me it contains 3 rows for the field cmis:name:
What is the difference between each of the three?
(remark: as you can see, the same happens for cmis:description)

 
                        
It is a bug in Alfresco.
I reported it at https://issues.alfresco.com/jira/browse/ALF-21974
The issue is currently marked as "In progress".