Any chance this issue NIM086149 "Feature Service Field Types are not ordered correctly on REST endpoint" has been fixed in a higher version of ArcGIS Enterprise? I'm trapped on ArcGIS Server version 10.3.1 and just encountered the problem where the Types are arranged randomly in the Web AppBuilder edit template. We will be upgrading later this year and I don't really want to do the subtype workaround unless the problem is still not fixed.