Minecraft Java Edition 1.15.1 Pre-Release 1 changelog

12 December 2019

We are going to be releasing Minecraft Java Edition 1.15.1 to fix some critical issues in version 1.15. We are now releasing the first (and possibly only) pre-release.

CHANGES IN 1.15.1 PRE-RELEASE 1

• Optimized chunk rendering performance, especially for chunks with many different block states
• Fixed an error spammed to the game's log files caused by custom spawner blocks spawning villagers
• Improved network handling of invalid Biome ids
• Fixed a crash in the Realms screen
• Fixed bugs

FIXED BUGS IN 1.15.1 PRE-RELEASE 1

• MC-167530 - Anvils causing java.lang.StackOverflowError
• MC-167482 - Corrupt chunk causes force upgrading a world to fail

GET THE PRE-RELEASE

To install the pre-release, open up the Minecraft Launcher and enable snapshots in the "Installations" tab.

Pre-releases can corrupt your world, please backup and/or run them in a different folder from your main worlds.

Cross-platform server jar:

• Minecraft server jar

Report bugs here:

• Minecraft issue tracker!

Want to give feedback?

• Head over to our feedback website or come chat with us about it on the official Minecraft Discord.