minimum bug reproduction
to reproduce issue#241
(py3_venv)$ git clone https://github.com/crvarner/concurrently_bug.git
(py3_venv)$ pip install flask
(py3_venv)$ npm install
(py3_venv)$ npm start
refresh http://localhost:5000/
setting raw flag produces expected behavior without the pretty colors
(py3_venv)$ npm run raw