This looks like it is caused by the Ubuntu specific changes to dh_installchangelogs.
Namely, the original debhelper will look for (among other) "CHANGES" as an upstream changelog. Ubuntu have removed this to save disk space and leads to debhelper picking "changelog" as a candidate for the "main package" (and nothing for others).
This looks like it is caused by the Ubuntu specific changes to dh_installchang elogs.
Namely, the original debhelper will look for (among other) "CHANGES" as an upstream changelog. Ubuntu have removed this to save disk space and leads to debhelper picking "changelog" as a candidate for the "main package" (and nothing for others).