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13w41a Banner.png
Java Edition 13w41a.png

Java Edition



Release date

October 10, 2013[1]

Snapshot for



Client (.json)
Server (.exe)

Protocol version


13w41a is the tenth snapshot for Java Edition 1.7.2 which adds stained glass and their pane variants.



Stained glass
  • Crafted the same way as stained clay, but with glass
  • Comes in 16 different colors.
Stained glass panes
  • Crafted the same way as regular glass panes, but with stained glass.
  • Comes in 16 different colors.





Glass panes
  • Now connect to each other and glass.
  • Are rendered differently, and are 2 pixel thick boxes.
  • Fixed transparency.
  • Is now visible through other ice.
Iron bars
  • Now connect to each other and glass
  • Are rendered differently, and are 2 pixel thick boxes
Locked chest
  • Removed the block fully, instead, it replaced the ID for stained glass.
  • Fixed transparency.
  • Are now visible through other waters.


Nether portals
  • Fixed transparency.
  • Are now visible through other nether portals.


Network Code
  • Rewrite of the network code.[2]
  • Uses Netty now.
  • Most packets won't change.
    • Handshake and ping procedure is being redone.
  • There is a packet length header.
Server list
  • Reworked the list.
  • Added server icons.
  • Lists the current players on a server when you hover over the player number.
  • Added support for multi-line MOTD comments.
  • Removed support for MOTD comments going offscreen.
  • Reset the protocol version.
Video settings
  • Changes to the menu.



Distance effects
  • Item frames no longer follow the camera and jitter with camera rotation at extreme coordinates.
  • Paintings also no longer follow the camera and jitter with camera rotation at extreme coordinates.
  • Fixed a desynchronisation issue that appeared at high coordinates; this varied depending on hardware.
    • In some cases, this simply caused entities, water, ice and the wireframe block outline box to appear slightly desynchronised from the world itself. However, in others, the former grouping would jitter severely.


15 issues fixed
From released versions before 1.7.2
  • MC-1379 – Transparent texture makes transparent texture behind invisible.
  • MC-10984 – GS4 query listener fails to send player list when len(players) > 127.
  • MC-12984 – Getting a locked chest pushed into the player's head crashes the game.
  • MC-16435 – Boats still break on lilies.
From the 1.7.2 development versions
  • MC-29498 – Villagers, exchanging 2 items for one, have their second required item in trade deleted after reloading the world.
  • MC-29748 – Fire aspect does not cause fire on any mob.
  • MC-30873 – Crash - Block Statistics: If player breaks a technical block, the statistics get corrupted.
  • MC-31619 – Item frames are self-lit.
  • MC-31649 – Beacon beam not showing.
  • MC-31686 – Custom mob names can't be seen through blocks.
  • MC-32008 – 13w38b leaves are lighter and cast a lot fewer shadows.
  • MC-32733 – Game is sending incorrect (additional?) frames to the video buffer.
  • MC-32762 – No logging to development console.
  • MC-33057 – Text is completely unreadable/invisible.
From the previous development version
  • MC-33025 – No logs created in 13w39 client in singleplayer mode.


  • 13w41b has the same protocol version as 13w41a, but not compatible with each other.
  • 13w41a was previously removed from the launcher for some time, but was added back in September 2018.