Are you using a language other than English in the smartview options window?
I have seen the following the issue with respect to the HsDescription() function in smartview.
The HsDescription () function in smartview does not return the description of the members when the display language under "Advanced" tab in the smartview options window is set as any of the following languages
So for, it has been tested with these languages. The issue could exist with other languages as well. The HsDescription() function returns the description of the members properly if used in English language.
If you are experiencing the same behavior then this issue is caused by a code bug and is expected to be fixed in the upcoming HFM patch.