Client not getting updated toggles in flask app when running via gunicorn with "--preload" option

Describe the bug

When running unleash with flask/gunicorn, it is not getting updated with latest toggles from unleash server when it is run with option "--preload". More info on preload

gunicorn --chdir app app:app -w 2 --threads 2 -b 0.0.0.0:80 --preload

To Reproduce

I have a branch to demonstrate. using this demo toggle https://app.unleash-hosted.com/demo/projects/default/features/gunicorn

1. From this Repo https://github.com/raymzag/Flask_Docker_App
2. docker-compose up --build
3. Go to http://localhost/test_unleash
4. Try toggling on/off, give it some time 10-15s. It will not be updated.
5. Remove the --preload option from https://github.com/raymzag/Flask_Docker_App/blob/master/gunicorn.sh
6. Do docker-compose up --build again.
7. Try toggling on/off, give it some time 10-15s. it will be updated.

Expected behavior
Expects the unleash toggles to be refreshed in flask/gunicorn app with --preload option.

Logs
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Additional context
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