Earthlings, you may have come across some server issues. The servers are currently undergoing maintenance.
This may mean:
In-game chunk borders don't load properly. This is because chunks are loaded on different servers for efficiency.
Servers hosted in-game may be down temporarily as they are moved.
Visual effects may occur, like mirages as incorrect data is loaded.
We'll update if anything changes, otherwise the maintenance should end in a few hours. Have fun, Earthlings!