A group with the settings Type Normal, Privilege All and Recipients A, B, C will properly display the members of this group in the address book.
All other group settings won't display any group memberships, e. g. Type Normal, Privilege Specific, Recipients A, B, C and Sender A, B, C.
S | Name | Type | Version | Arch | Repository
---+------------------------------------+------------+---------------------------------+--------+------------------
| branding-grommunio | srcpackage | 1-lp155.20.1 | noarch | grommunio
| gromacs | package | 2022.4-bp155.1.6 | x86_64 | base
| gromacs-bash-completion | package | 2022.4-bp155.1.6 | noarch | base
| gromacs-data | package | 2022.4-bp155.1.6 | noarch | base
| gromacs-debuginfo | package | 2022.4-bp155.1.6 | x86_64 | debug
| gromacs-debugsource | package | 2022.4-bp155.1.6 | x86_64 | debug
| gromacs-devel | package | 2022.4-bp155.1.6 | x86_64 | base
| gromacs-doc | package | 2022.4-bp155.1.6 | noarch | base
| gromacs-openmpi | package | 2022.4-bp155.1.5 | x86_64 | base
| gromacs-openmpi-debuginfo | package | 2022.4-bp155.1.5 | x86_64 | debug
| gromacs-openmpi-debugsource | package | 2022.4-bp155.1.5 | x86_64 | debug
| gromit-mpx | package | 1.4-bp155.2.13 | x86_64 | base
| gromit-mpx-debuginfo | package | 1.4-bp155.2.13 | x86_64 | debug
| gromit-mpx-debugsource | package | 1.4-bp155.2.13 | x86_64 | debug
i | grommunio | pattern | 1-lp155.9.1 | x86_64 | grommunio
i+ | grommunio-admin-api | package | 1.16.11.23c560a-lp155.47.1 | noarch | grommunio
| grommunio-admin-api | srcpackage | 1.16.11.23c560a-lp155.47.1 | noarch | grommunio
i+ | grommunio-admin-common | package | 38.f4553bd-lp155.27.1 | noarch | grommunio
| grommunio-admin-common | srcpackage | 38.f4553bd-lp155.27.1 | noarch | grommunio
i+ | grommunio-admin-web | package | 3.1.0.37.b80bc5b-lp155.22.1 | noarch | grommunio
| grommunio-admin-web | srcpackage | 3.1.0.37.b80bc5b-lp155.22.1 | noarch | grommunio
i+ | grommunio-antispam | package | 3.9.1-lp155.1.3 | x86_64 | grommunio
| grommunio-antispam | srcpackage | 3.9.1-lp155.1.3 | noarch | grommunio
| grommunio-antispam | srcpackage | 3.9.1-lp155.1.2 | noarch | grommunio
| grommunio-antispam-debuginfo | package | 3.9.1-lp155.1.3 | x86_64 | grommunio
| grommunio-antispam-debugsource | package | 3.9.1-lp155.1.3 | x86_64 | grommunio
| grommunio-archive | package | 1.3.13.g137.d1b0df1b-lp155.6.84 | x86_64 | grommunio
| grommunio-archive | srcpackage | 1.3.13.g137.d1b0df1b-lp155.6.86 | noarch | grommunio
| grommunio-archive | srcpackage | 1.3.13.g137.d1b0df1b-lp155.6.84 | noarch | grommunio
| grommunio-archive | srcpackage | 1.3.13.g137.d1b0df1b-lp155.6.78 | noarch | grommunio
| grommunio-archive | srcpackage | 1.3.13.g137.d1b0df1b-lp155.6.77 | noarch | grommunio
| grommunio-archive-debuginfo | package | 1.3.13.g137.d1b0df1b-lp155.6.84 | x86_64 | grommunio
| grommunio-archive-debugsource | package | 1.3.13.g137.d1b0df1b-lp155.6.84 | x86_64 | grommunio
| grommunio-auth | package | 0.2.16.e187c26-lp155.24.1 | noarch | grommunio
| grommunio-chat | package | 9.5.1-lp155.1.1 | x86_64 | grommunio
i+ | grommunio-common | package | 24.0cedcbe-lp155.26.1 | x86_64 | grommunio
| grommunio-common | srcpackage | 24.0cedcbe-lp155.26.1 | noarch | grommunio
i+ | grommunio-cui | package | 1.0.265.2c7abfc-lp155.34.1 | noarch | grommunio
| grommunio-cui | srcpackage | 1.0.265.2c7abfc-lp155.34.1 | noarch | grommunio
i+ | grommunio-dav | package | 1.3.74.94260cb-lp155.4.1 | noarch | grommunio
| grommunio-dav | srcpackage | 1.3.74.94260cb-lp155.4.1 | noarch | grommunio
i+ | grommunio-dbconf | package | 1.1.1.da20a46-lp155.22.1 | x86_64 | grommunio
| grommunio-dbconf | srcpackage | 1.1.1.da20a46-lp155.22.1 | noarch | grommunio
| grommunio-dbconf-debuginfo | package | 1.1.1.da20a46-lp155.22.1 | x86_64 | grommunio
| grommunio-dbconf-debugsource | package | 1.1.1.da20a46-lp155.22.1 | x86_64 | grommunio
i | grommunio-error-pages | package | 1.0.10.bb2df37-lp155.21.1 | noarch | grommunio
| grommunio-error-pages | srcpackage | 1.0.10.bb2df37-lp155.21.1 | noarch | grommunio
| grommunio-files | package | 26.0.12-lp155.5.1 | noarch | grommunio
i+ | grommunio-imapsync | package | 2.264-lp155.2.1 | noarch | grommunio
i+ | grommunio-index | package | 1.0.2.gb782c51-lp155.22.2 | x86_64 | grommunio
| grommunio-index | srcpackage | 1.0.2.gb782c51-lp155.22.2 | noarch | grommunio
| grommunio-index | srcpackage | 1.0.2.gb782c51-lp155.22.1 | noarch | grommunio
| grommunio-index-debuginfo | package | 1.0.2.gb782c51-lp155.22.2 | x86_64 | grommunio
| grommunio-index-debugsource | package | 1.0.2.gb782c51-lp155.22.2 | x86_64 | grommunio
| grommunio-keycloak | package | 24.0.5-lp155.1.1 | noarch | grommunio
| grommunio-office | package | 7.4.1-lp155.4.25 | x86_64 | grommunio
| grommunio-office-debuginfo | package | 7.4.1-lp155.4.25 | x86_64 | grommunio
| grommunio-office-fonts | package | 7.4.1-lp155.4.25 | noarch | grommunio
i+ | grommunio-release | package | 2023.11.3-lp155.12.1 | x86_64 | grommunio
| grommunio-release | srcpackage | 2023.11.3-lp155.12.1 | noarch | grommunio
i+ | grommunio-setup | package | 1.1.1.026f61a-lp155.34.1 | noarch | grommunio
| grommunio-setup | srcpackage | 1.1.1.026f61a-lp155.34.1 | noarch | grommunio
i+ | grommunio-sync | package | 2.0.141.9aa611d-lp155.46.1 | noarch | grommunio
| grommunio-sync | srcpackage | 2.0.141.9aa611d-lp155.46.1 | noarch | grommunio
i+ | grommunio-web | package | 3.9.174.g47e36ccf-lp155.29.1 | noarch | grommunio
| grommunio-web | srcpackage | 3.9.174.g47e36ccf-lp155.29.1 | noarch | grommunio
i+ | gromox | package | 2.38.14.330426e-lp155.10.1 | x86_64 | grommunio
| gromox | srcpackage | 2.38.14.330426e-lp155.10.1 | noarch | grommunio
i+ | gromox-debuginfo | package | 2.38.14.330426e-lp155.10.1 | x86_64 | grommunio
i+ | gromox-debugsource | package | 2.38.14.330426e-lp155.10.1 | x86_64 | grommunio
i+ | grub2-theme-grommunio | package | 1-lp155.20.1 | noarch | grommunio
| jitsi-meet-branding-grommunio | package | 2.0.6726-lp155.11.1 | noarch | grommunio
| jitsi-meet-branding-grommunio | package | 2.0.6726-lp155.10.1 | noarch | grommunio
| jitsi-meet-branding-grommunio | srcpackage | 2.0.6726-lp155.11.1 | noarch | grommunio
| jitsi-meet-branding-grommunio | srcpackage | 2.0.6726-lp155.10.1 | noarch | grommunio
| libgromacs7 | package | 2022.4-bp155.1.6 | x86_64 | base
| libgromacs7-debuginfo | package | 2022.4-bp155.1.6 | x86_64 | debug
| libgromacs_mpi7 | package | 2022.4-bp155.1.5 | x86_64 | base
| libgromacs_mpi7-debuginfo | package | 2022.4-bp155.1.5 | x86_64 | debug
i+ | NAME="grommunio" | product | "2023.11.3" | noarch | (System Packages)
i+ | patterns-grommunio | package | 1-lp155.9.1 | x86_64 | grommunio
| patterns-grommunio | srcpackage | 1-lp155.9.1 | noarch | grommunio
i+ | plymouth-theme-grommunio | package | 1-lp155.20.1 | noarch | grommunio
i | system-user-grommunio | package | 10-lp155.2.1 | noarch | grommunio
v | system-user-grommunio | package | 3-bp155.1.4 | noarch | base
| system-user-grommunio | srcpackage | 10-lp155.2.1 | noarch | grommunio
i | system-user-gromox | package | 9-lp155.5.1 | noarch | grommunio
v | system-user-gromox | package | 2-bp155.1.4 | noarch | base
| system-user-gromox | srcpackage | 9-lp155.5.1 | noarch | grommunio
i+ | systemd-coredump-grommunio | package | 1-lp155.3.1 | noarch | grommunio
| systemd-coredump-grommunio | srcpackage | 1-lp155.3.1 | noarch | grommunio
i | systemd-presets-branding-grommunio | package | 2024.06-lp155.2.1 | noarch | grommunio
| systemd-presets-branding-grommunio | srcpackage | 2024.06-lp155.2.1 | noarch | grommunio
EDITED by @crpb - markup and software-list hints