I run the server with the command below on 1.14 pre-release
java -Xmx4096M -Xms1024M -jar server.jar nogui --forceUpgrade --eraseCache
And all the chunks with light issue is fixed perfectly
I run the server with the command below on 1.14 pre-release
java -Xmx4096M -Xms1024M -jar server.jar nogui --forceUpgrade --eraseCache
And all the chunks with light issue is fixed perfectly