[BUG] Management of GPG keys fails without error

[tuaris]

Description
I am following the instructions https://docs.saltproject.io/en/latest/ref/states/all/salt.states.gpg.html#management-of-the-gpg-keychains. The GPG state for salt.states.gpg.present is not adding keys even though it says it's successful.

Setup
Example state for adding the GPG keys for RVM under the ubuntu user:

rvm-gpg:
  gpg.present:
    - name: rvm-gpg-keys
    - keys:
      - 7D2BAF1CF37B13E2069D6956105BD0E739499BDB
      - 409B6B1796C275462A1703113804BB82D39DC0E3
    - user: ubuntu
    - keyserver: pool.sks-keyservers.net
    - trust: fully

Please be as specific as possible and give set-up details.

• on-prem machine
• VM (Virtualbox, KVM, etc. please specify)
• VM running on a cloud service, please be explicit and add details
• container (Kubernetes, Docker, containerd, etc. please specify)
• or a combination, please be explicit
• jails if it is FreeBSD

Steps to Reproduce the behavior
Try to apply the sample state above, run state.apply, observe successful result:

----------
          ID: rvm-gpg
    Function: gpg.present
        Name: rvm-gpg-keys
      Result: True
     Comment: Adding rvm-gpg-keys to GPG keychain
              Set trust level for 7D2BAF1CF37B13E2069D6956105BD0E739499BDB to fully
              Adding rvm-gpg-keys to GPG keychain
              Set trust level for 409B6B1796C275462A1703113804BB82D39DC0E3 to fully
     Started: 08:41:40.428047
    Duration: 20168.769 ms
     Changes:   

The keys however are not present:

~$ gpg --list-keys
<no output>

Expected behavior
The GPG keys should be present for the user and trusted

Versions Report

salt --versions-report

(Provided by running salt --versions-report. Please also mention any differences in master/minion versions.)

Salt Version:
          Salt: 3004.1
 
Dependency Versions:
          cffi: 1.14.6
      cherrypy: unknown
      dateutil: 2.7.3
     docker-py: Not Installed
         gitdb: 2.0.6
     gitpython: 3.0.7
        Jinja2: 2.10.1
       libgit2: 1.1.0
      M2Crypto: Not Installed
          Mako: Not Installed
       msgpack: 0.6.2
  msgpack-pure: Not Installed
  mysql-python: Not Installed
     pycparser: 2.20
      pycrypto: Not Installed
  pycryptodome: 3.6.1
        pygit2: 1.6.1
        Python: 3.8.10 (default, Mar 15 2022, 12:22:08)
  python-gnupg: 0.4.5
        PyYAML: 5.3.1
         PyZMQ: 18.1.1
         smmap: 2.0.5
       timelib: Not Installed
       Tornado: 4.5.3
           ZMQ: 4.3.2
 
System Versions:
          dist: ubuntu 20.04 focal
        locale: utf-8
       machine: x86_64
       release: 5.11.0-1025-aws
        system: Linux
       version: Ubuntu 20.04 focal

Additional context
Found some similar issues that have no ultimate solution #36771 and #46414

Logs on the minion show:

2022-06-01 08:40:59,418 [gnupg            :1004][WARNING ][610776] gpg returned a non-zero error code: 2
2022-06-01 08:41:09,537 [gnupg            :1004][WARNING ][610776] gpg returned a non-zero error code: 2
2022-06-01 08:41:19,622 [gnupg            :1004][WARNING ][610776] gpg returned a non-zero error code: 2