file-roller does not unpack *.deb package

I'm working on Ubuntu 18.04 x86_64 fully patched with the 5.3.0-66 kernel. The machine has file-roller 3.28.0.

I'm trying to unpack a *.deb package. I double click on the *.deb archive and it opens in file-roller. I then click the 'Extract' button and select a directory. Finally, I click 'Extract' button again (in the file picker).

file-roller only unpacks the _gpgbuilder file. It does not unpack control.tar.xz, data.tar.xz, or debian-binary.

It does not matter whether I select 0 files in file picker, or all files in file picker. file-roller only unpacks the one file.

If file-roller worked as expected, then I would expect to see _gpgbuilder, control.tar.xz, data.tar.xz, or debian-binary in the extraction directory.

The file I am trying to extract is Zoom's binary for Linux. It is available from https://zoom.us/download. I want to disassemble the program and maybe see what's going on under the hood.

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$ apt-cache show file-roller
Package: file-roller
Architecture: amd64
Version: 3.28.0-1ubuntu1.2
Priority: optional
Section: gnome
Origin: Ubuntu
Maintainer: Ubuntu Developers <email address hidden>
Original-Maintainer: Debian GNOME Maintainers <email address hidden>
Bugs: https://bugs.launchpad.net/ubuntu/+filebug
Installed-Size: 1840
Depends: bzip2, unzip, zip, dconf-gsettings-backend | gsettings-backend, libarchive13 (>= 3.1.2), libc6 (>= 2.14), libcairo2 (>= 1.4.10), libgdk-pixbuf2.0-0 (>= 2.22.0), libglib2.0-0 (>= 2.37.3), libgtk-3-0 (>= 3.13.2), libjson-glib-1.0-0 (>= 0.12.0), libmagic1 (>= 5.12), libnautilus-extension1a (>= 3.14.1), libnotify4 (>= 0.7.0), libpango-1.0-0 (>= 1.14.0)
Recommends: gvfs, yelp
Suggests: p7zip-full, arj, lha, lzip, lzma, lzop, ncompress, rpm2cpio, rzip, sharutils, squashfs-tools, unace, unalz, unar, xz-utils, zoo
Filename: pool/main/f/file-roller/file-roller_3.28.0-1ubuntu1.2_amd64.deb
Size: 320176
MD5sum: d001eb54e2c46539a205c608fbf2bf85
SHA1: c77abc056b1afcd4d050a85f3cfe46a07a073b27
SHA256: 16c77f963dc7d92dff0bfbdece751474820c8775795845f17819641e1bf0d354
Homepage: https://wiki.gnome.org/Apps/FileRoller
Description-en: archive manager for GNOME
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