openssl dhparam: -out option is only working depending on the position

Issue

• In Red Hat Enterprise Linux (RHEL) 8, openssl dhparam has become position dependent.
  In RHEL 7 the following used to work and produced the expected result:

  $ openssl dhparam -text -5 512 -out ./dh512.pem
  Generating DH parameters, 512 bit long safe prime, generator 5
  This is going to take a long time
  [ ... ]
  $ cat ./dh512.pem
  DH Parameters: (512 bit)
  [ ... ]
  

  The same command in RHEL 8 doesn't work as expected:

  $ openssl dhparam -text -5 512 -out ./dh512.pem
  Generating DH parameters, 512 bit long safe prime, generator 5
  This is going to take a long time
  [ ... ]
  $ cat ./dh512.pem
  cat: ./dh512.pem: No such file or directory