I am trying to create a 3/4-14 NPT on a 1.050" boss in SolidWorks 2016.  I have done this dozens of times in successfully in SolidWorks 2015.  For some reason, the swept cut only follows the the Helix for a half turn.  I have reopened pipe threads created in 2015 (they look fine by the way) to try to see if there is some default setting that is different in 2016 and cannot seem to find any difference.  I considered using the new thread tool, but apparently it does not support pipe threads. 

Result from SW 2015:

What I get in SW 2016: