System.err.println() no longer printing to console

Hi folks,

in past (MPS 2020.X and later releases) i used System.err.println() in all language aspects to quickly write some information to the console, where i started MPS from. This was mainly for debugging purpose . I could use it in a generator macro or in a typsystem rule - no problem. 

However, the System.err's no longer get written to the console on MPS2023.3 - at least on the Mac installation. 

Does anyone has any ideas on that? How can i further investigate this behaviour?

Cheers for any hint,

Daniel