There is no Debian changelog included in the binary package;
instead, /usr/share/doc/python3-debianbts/changelog.gz
contains something that looks like a NEWS file.

Looks like adding CHANGELOG.md to debian/docs in e566339
confused debheler into overwriting the changelog with it.

Huh, this bug made it into a release. And Policy is very weird about
this: the MUST in §12.7 doesn’t apply, because this is a native package,
but this file is not used as both Debian and upstream changelog file
either.

In the interest of apt-listchanges users, this bug should simply be
still fixed, though ☻

We believe that the bug you reported is fixed in the latest version of
python-debianbts, which is due to be installed in the Debian FTP archive.

A summary of the changes between this version and the previous one is
attached.

Thank you for reporting the bug, which will now be closed.  If you
have further comments please address them to 949210@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.

Debian distribution maintenance software
pp.
Bastian Venthur <venthur@debian.org> (supplier of updated python-debianbts package)

(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing ftpmaster@ftp-master.debian.org)
Format: 1.8
Date: Sun, 24 Apr 2022 15:00:03 +0200
Source: python-debianbts
Binary: python3-debianbts
Architecture: source all
Version: 3.2.1
Distribution: unstable
Urgency: medium
Maintainer: Bastian Venthur <venthur@debian.org>
Changed-By: Bastian Venthur <venthur@debian.org>
Description:
 python3-debianbts - Python interface to Debian's Bug Tracking System
Closes: 949210
Changes:
 python-debianbts (3.2.1) unstable; urgency=medium
 .
   * Fix "changelog missing in binary package" Removed native CHANGELOG.md from
     dh_installdocs, as it prevented the shipping of the Debian changelog.
     (Closes: #949210)
   * Updated build system
   * Added sphinx documentation (readthedocs)
   * use pytest-xdist to speed up testing
Checksums-Sha1:
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 eab975c18cfcf7bd838c02df715b0b5d33793200 19784 python-debianbts_3.2.1.tar.xz
 33c09ecb5ac78dbe2f54a4a20dae559ae7c27bc3 7100 python-debianbts_3.2.1_amd64.buildinfo
 bbbad93690eddfa4df764b0fe932103e6d34058b 15652 python3-debianbts_3.2.1_all.deb
Checksums-Sha256:
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 97f3a59b4baf75186fcb8139fa77f7d2c79152bb7edb9d211894a5094c840b3a 19784 python-debianbts_3.2.1.tar.xz
 7fc51a669c8ebc46bc81e07e33fd68e74970f733b05e3caeef955b03f8854c72 7100 python-debianbts_3.2.1_amd64.buildinfo
 2db7e99b345088d2b8ad0cf62827fa7fd1917f6ce81bb408c9976f94c73f3213 15652 python3-debianbts_3.2.1_all.deb
Files:
 cb7ab54021c06b709fc98dcfe40d6053 1670 python optional python-debianbts_3.2.1.dsc
 cd41af7075b32e3c8fb61278ab4d4788 19784 python optional python-debianbts_3.2.1.tar.xz
 3d0954567fcfb9fc272bd59313cfa518 7100 python optional python-debianbts_3.2.1_amd64.buildinfo
 9ded222b5fc0516bfbe3728a8a504ae7 15652 python optional python3-debianbts_3.2.1_all.deb
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