When using connecting to a World Partition level on a dedicated server the client get's disconnected immediately. I tested this with a non WP level and the client connected with no issues. I've included logs of the project and of the server
Used this documentation to setup the server on a GitHub build: https://docs.unrealengine.com/4.27/en-US/InteractiveExperiences/Networking/HowTo/DedicatedServers/
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-163742 in the post.
| 19 | 
| Component | UE - World Creation - Worldbuilding Tools - World Partition | 
|---|---|
| Affects Versions | 5.0.3 | 
| Target Fix | 5.1 | 
| Created | Sep 14, 2022 | 
|---|---|
| Resolved | Oct 13, 2022 | 
| Updated | Oct 21, 2022 |