I am getting a large extra space between subscripts (and superscripts) and the non-subscripted text. It looks fine in the properties dialogue preview frame but the extra space appears on the graph page.
Origin Ver. 2016 and Service Release 2 Operating System: Windows 10
I couldn't seem to paste the screenshot in the message so I uploaded it. The file name is OriginScreenShot.doc. When I export the graph, it displays correctly so it is not really a problem.