Multiline keygen doesn't appear to work with GnuPG 2.4.1

Generating keys per these instructions fails in deployment with the following error reconciling the BB template kustomization:

  - lastTransitionTime: "2023-06-14T20:13:24Z"
    message: |-
      decryption failed for 'common-bb-htt5fdf727': failed to decrypt and format 'bigbang/common-bb-htt5fdf727' Secret data: cannot get sops data key: Failed to get the data key required to decrypt the SOPS file.

      Group 0: FAILED
        BFCE24471D057189431051F46C2B2C3650B9A7D2: FAILED
          - | failed to decrypt sops data key with pgp: gpg: encrypted
            | with RSA key, ID 4E78D0864A4EF31F
            | gpg: decryption failed: No secret key

This key works with sops on host (macOS, brew'd sops 3.7.3 and gnupg 2.4.1).

When exec'd in kustomize-controller, it's possible to watch the sops environment build, and catch the keyfile in private-keys-v1.d; it gets created with the correct keygrip:

> gpg -K --with-keygrip bigbang-dev-environment
sec   rsa4096 2023-06-14 [SCEAR]
      BFCE24471D057189431051F46C2B2C3650B9A7D2
      Keygrip = 71B318C5184F2672D9C32929447F810A817F0E8C
uid           [ultimate] bigbang-dev-environment (bigbang-dev-environment)
ssb   rsa4096 2023-06-14 [SEAR]
      Keygrip = DBA8A5C3AD40E3AEAEFA421F8125D8B161045540

./sops-gnupghome-2283077354/private-keys-v1.d/71B318C5184F2672D9C32929447F810A817F0E8C.key

Re-keying with a new key generated with the same keyparams on GnuPG 2.2.20 works.