Nextcloud: `occ maintenance:install` writes wrong config into the `config.php` file

[TheRealBecks]

When installing a new Nextcloud with the occ maintenance:install command the Nextcloud won't come up afterwards due to wrong database credentials:

php occ maintenance:install \
  -n \
  --data-dir "/var/www/nextcloud_data" \
  --database "pgsql" \
  --database-host "postgres" \
  --database-name "nextclouddatabasetest" \
  --database-user "nextcloudusertest" \
  --database-pass "lkj#acoiuqD4ic6!Bn21ac" \
  --admin-user "admintest" \
  --admin-pass "<slj#cvb45!o93iuwJFP9"

That will result into the following config.php file:

<?php
$CONFIG = array (
  'passwordsalt' => 'CuRTVGtkGk9/AFKCIgSp8KR5Q/3KUl',
  'secret' => 'WJMl4bhJDlgr1vMYidHfA5Mb0Dz+eXumlZRVolA7zOVzEP6R',
  'trusted_domains' => 
  array (
    0 => 'localhost',
  ),
  'datadirectory' => '/var/www/nextcloud_data',
  'dbtype' => 'pgsql',
  'version' => '32.0.1.2',
  'overwrite.cli.url' => 'http://localhost',
  'dbname' => 'nextclouddatabasetest',
  'dbhost' => 'postgres',
  'dbtableprefix' => 'oc_',
  'dbuser' => 'oc_admin',
  'dbpassword' => 'mPeDAdmwMqNyuQp4bstpNczWiDsdRK',
  'installed' => true,
  'instanceid' => 'ocyosehy194m',
);