[NTG-context] @inproceedings not formatted

[Exp]

Hi all,

It seems that the \placelistofpublications refuses to format the
@inproceedings entries.
Instead, it yields something like "inproceedings: [author: AnAuthor]
[title: SomeTitle]".

I tried the command \showbtxfields following [
http://pragma-ade.nl/general/manuals/mkiv-publications.pdf], Table 3.2, but
instead of 25 entries where @inproceedings is supposed to appear, it gives
only 4 (article, book, demo-a, demo-b).

Any help would be appreciated!

code list:

(main.bib)
@inproceedings{AnArticle,
  author="AnAuthor",
  title="SomeTitle"
}

(main.mkiv)
\usebtxdataset[main.bib]
\starttext
\placelistofpublications[method=dataset]
\stoptext

(context --version)
mtx-context     | current version: 2019.03.21 21:39
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.ntg.nl/pipermail/ntg-context/attachments/20200109/84e67bf9/attachment-0001.htm>