Bug report: wrong unicode conversion from JabRef

[Rich Shepard]

Herbert Voss identified part of my issue of an accented character in a
bibiography citation is the bib_key. Removing the ã from the bib_key and
leaving it in the first author's name produced the attached citation image.

In the doc's preamble I inserted:
\usepackage{newunicodechar}
\newunicodechar{ã}{\~{a}}
but the resulting citation was still wrong.

Can this be fixed?

TIA,

Rich