Java Edition Beta 1.3_01
From Minecraft Wiki
Minecraft Beta 1.3_01
February 23, 2011
Beta 1.3_01 was released to fix some of the bugs and crashes in Beta 1.3.
- Dependencies on Java 1.6 are gone.
3 bugs fixed
- Fixed the recent issues on macOS in which the game would crash when "Singleplayer" button was clicked on.
- Able to connect client to Minecraft server 1.3.
- Fixed item duplication glitch.