Java Edition Classic 0.0.21a
From Minecraft Wiki
June 22, 2009
- Higher FPS on some computers.
- A cause of a "Hang bug" was determined.
- Fixed a bug that caused the game to be impossible to play on MacBook.
- Picking (pick block) should work everywhere.
- "New client, fixes a few annoyances" – The Word of Notch, June 22, 2009