Any programming language trying to output to stderr displays nothing

[fffelix-jan]

I thought it was only the Python Anaconda, but none of the programming languages can display error messages sent to stderr.

[pgbovine]

thanks for the report: adding to https://github.com/pgbovine/OnlinePythonTutor/blob/master/unsupported-features.md now and leaving this issue open for the future