Cannot delete public keys

[Midar]

1.) Import any public key that does not set the policy to TREZOR-GPG.
2.) Try to remove it with gpg --delete-keys
3.) GPG complains that you have a private key for it?!
4.) Use gpg --delete-secret-and-public-key
5.) Confirm
6.) GPG hangs

Temporarily removing the agent line from gpg.conf makes it work.