Can not upload and image with ROOT_URL change, Changing Root Url does not affect ${ __meteor_runtime_config__.ROOT_URL_PATH_PREFIX }

Description:

I am runnning 4 instances of Rocketchat behind Nginx. My root URL is https://xx.yyyy.com. I am using pm2 with example-pm2.json and modified it to reflect the ROOT_URL and port. With the app comes up fine and Chat is working fine. But when I try to upload an image/file in to the chat, it still seems to try to connect http://localhost:3000/ufs so the upload is failng. Also I noticed that even after the root url change the RocketChat.settings.get('Site_Url') always returns localhost:3000

Server Setup Information:

• Version of Rocket.Chat Server:
• Operating System:
• Deployment Method(snap/docker/tar/etc):
• Number of Running Instances:
• DB Replicaset Oplog:
• Node Version:
• mongoDB Version:
  
  

This can also be reproduced in the local with a single instance.

Steps to Reproduce:

1. Change the root url in to localhost:3333 from localhost:3000.
2. run the example-build-run.sh
   3.try to upload an image.

Expected behavior:

An image is uploaded and shows up in the chat window.

Actual behavior:

Start with the ROOT_URL configuration and the example-build-run.sh entry point, then reproduce the upload using localhost:3333 while checking meteor_runtime_config.ROOT_URL_PATH_PREFIX and the /ufs target. Done means an image uploads successfully through the changed root URL instead of attempting localhost:3000.