DomainServerMain is in charge of starting the managed servers which are launched from the process controller, which captures the stderr of the launched process and saves any captured errors in the process-controller.log file. This was implemented by WFCORE-6579.

This capture of the stderr works only until a certain point; once the managed process installs the StdioContext, the process controller assumes that any stdout/stderr traces will be managed by the managed server and its logging framework.

However, there are still usages of the original stderr in the DomainServerMain after the StdioContext gets installed, which means that any trace printed using this original stream gets out of control of the logger framework, which makes difficult to review an analize the root cause of an issue if the user has no access to the server output console where this original stderr gets printed.