The fact that now there is a redirector process seems to me like a regression issue.
I have an application which Popen several processes and uses the Popen object in order to get the subprocesses pids and act upon this pids (i.e. looks for log files with associated pid).

Now this breaks because the subprocess pid is the one of the redirector and not the actual one.

This is similar to 'Ray' issue mentioned earlier.