I forgot to check topic since morning and so many replies.
I'm using autocad 2018 and zwcad 2015, same wrong results with Lee Mac Box Text (TTF times new roman as font).
rkmcswain uses propably default offset as 0.35 not 0 as me and ronjonp
It seems to work fine with shx fonts
Edit:
I wrote to Autodesk, I will post their opinion.