[O] org-crypt broken on Ubuntu 18.04

[Óscar Fuentes]

Hello.

Today I noticed that org-crypt is broken on my daily driver.

On a header with the :crypt: tag I invoke org-decrypt-entry, a popup
dialog asks for the password, I type the password and then the
minibuffer shows

GPG error: "Decryption failed", ""

The complete error message on *Messages* is

epg--check-error-for-decrypt: GPG error: "Decryption failed", ""

This is a very recent problem. In dpkg.log I see:

2018-06-12 00:33:00 upgrade gnupg-utils:amd64 2.2.4-1ubuntu1 2.2.4-1ubuntu1.1

2018-06-12 00:33:05 upgrade gnupg:amd64 2.2.4-1ubuntu1 2.2.4-1ubuntu1.1

I tried the latest org-mode (9.1.13) and Emacs from master branch but
the problem persists.

$ gpg --version
gpg (GnuPG) 2.2.4
libgcrypt 1.8.1
Copyright (C) 2017 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <https://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.

Home: /home/oscar/.gnupg
Supported algorithms:
Pubkey: RSA, ELG, DSA, ECDH, ECDSA, EDDSA
Cipher: IDEA, 3DES, CAST5, BLOWFISH, AES, AES192, AES256, TWOFISH,
        CAMELLIA128, CAMELLIA192, CAMELLIA256
Hash: SHA1, RIPEMD160, SHA256, SHA384, SHA512, SHA224
Compression: Uncompressed, ZIP, ZLIB, BZIP2