ps and AIX field descriptors

[Andreas Leha]

Hi all,

I am facing a strange issue.  This command used to work

  ps -eo '%p|%C'

Now, on a debian testing machine only

  ps -eo '%p %C'

works.  Running

  ps -eo '%p|%C'

results in this error:

  error: improper AIX field descriptor

ps --version says 'ps from procps-ng 4.0.2'

Now my question: How can I restore the previous behaviour that allowed
other than whitespace separators between fields?

Thanks in advance!
Andreas