Put the summary of the bug you're having here
What I expected to happen was...:
I was expecting chunks to load when there are 2 or more people on a server
What actually happened was...:
Chunks starts disappearing after there is more than 1 person on a server
Steps to Reproduce:
1. Start server
2. One person logs onto the server (Server runs normally)
3. Second person joins server (Chunks start to disappear)
Linked issues
Comments

Please check if that's still an issue for you in the latest 1.14 (pre-)release.