[RCU] Roundcube 1.4 do not display body of vcf invitation

[Josef Karliak]

Good morning,
I found that I cannot see vcf file - invitation to some meeting
(Outlook). When I receive it in Roundcube, I can accept it, decline it,
... but I cannot see text of this invitation in the email.
When I accept it, all is fine in the calendar. But not while viewving
email.
What did I missed ?

composer.json:
{
      "name": "roundcube/roundcubemail",
      "description": "The Roundcube Webmail suite",
      "license": "GPL-3.0+",
      "repositories": [
          {
              "type": "composer",
              "url": "https://plugins.roundcube.net"
          },
                  {
              "type": "vcs",
              "url":
"https://git.kolab.org/diffusion/PNL/php-net_ldap.git"
          }
      ],
      "require": {
          "php": ">=5.4.0",
          "pear/pear-core-minimal": "~1.10.1",
          "pear/auth_sasl": "~1.1.0",
          "pear/net_idna2": "~0.2.0",
          "pear/mail_mime": "~1.10.0",
          "pear/net_smtp": "~1.8.1",
          "pear/crypt_gpg": "~1.6.3",
          "pear/net_sieve": "~1.4.3",
          "roundcube/plugin-installer": "~0.1.6",
          "masterminds/html5": "~2.5.0",
          "endroid/qr-code": "~1.6.5",
          "kolab/net_ldap3": "~1.1.1",
          "sabre/vobject": "~3.5.3",
          "kolab/calendar": "^3.5"
      },
      "require-dev": {
          "phpunit/phpunit": "^4.8.36 || ^5.7.21"
      },
      "suggest": {
          "mkopinsky/zxcvbn-php": "^4.4.2 required for Zxcvbn password
strength driver"
      }
}

Thanks and best regards
J.Karliak