I'm using the plugin bibtex4word in Word 2013 to insert citations & bibliographies. When I try styles plain, IEEEtran etc., they look exactly as they're described. But when I try a new style file: mdpi.bst downloaded from here, the labels look strange in Word:

The label style should be numeric like "[N]" as described and it works fine with LaTeX:

I've searched and read some posts, still with no clues what to do:
- What should I change in a bst file in order to have numbered entries in the bibliography?
- amsalpha-like bibtex style with manual labels
Question is: What's wrong with the bibtex4word plugin or Word or the mdpi.bst style file? How can I fix that?
PS1:
The bbl file auto generated by bibtex4word seems to be ok:
\begin{thebibliography}{-------}
\providecommand{\natexlab}[1]{#1}
\bibitem[Feng \em{et~al.}(2014)Feng, Taguchi, and Kamat]{feng_fast_2014}
Feng, C.; Taguchi, Y.; Kamat, V.R.
\newblock Fast plane extraction in organized point clouds using agglomerative
hierarchical clustering.
\newblock 2014 {IEEE} {International} {Conference} on {Robotics} and
{Automation} ({ICRA}), 2014, pp. 6218--6225.
\end{thebibliography}