Endless connection loop during login when using cloud.mongodb.com shared instance (Mongodb V5.0.6)

Description:

For our Rocket.Chat we use a shared M2 instance at https://www.mongodb.com/cloud. Suddenly we can no longer log into Rocket Chat. We only see a flicker of "Waiting for Server.." and "Connecting...".

I was able to reproduce the problem with a fresh new MongoDB instance on cloud.mongodb.com and new Rocket.Chat docker container. Here the same problem happens when finishing the wizard:

Steps to reproduce:

1. Create a new free Shared M0 Instance on cloud.mongodb.com
2. Start Rocket.Chat against the new instance
3. Go through setup wizard

Expected behavior:

Wizard should be able to be completed, login should be possible

Actual behavior:

You get stuck in the last step of the wizard with a endless loop of "Waiting for server..." and "Connecting..."

Server Setup Information:

• Version of Rocket.Chat Server: 4.4.2 (same with 4.3)
• Operating System: Ubuntu 20.04.2 LTS
• Deployment Method: docker
• Number of Running Instances: 1
• DB Replicaset Oplog:
• NodeJS Version: 14.18.2 - x64
• MongoDB Version: 5.0.6

Client Setup Information

• Chrome (98.0.4758.102) / Safari
• Operating System: macOS Monteray

Relevant logs:

No logs/errors on server or browser

Reproduce the setup wizard login loop using a fresh MongoDB 5.0.6 shared instance and the Rocket.Chat 4.4.2 Docker deployment, then inspect the client and server behavior because the report names no files or tests. Done means the wizard completes and login remains connected without the repeated “Waiting for server...” and “Connecting...” states.