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Mojang has an official bug tracker and does not track bugs for any editions of Minecraft on this wiki. Please use the appropriate bug tracker to report and view current bug reports.

Java: bugs.mojang.com/browse/MC.
Bedrock: bugs.mojang.com/browse/MCPE.


For further info, see the issues notice page.
Do not delete this page, any issues currently being recorded are purely for archiving purposes.
Issues
Full releases
Pre-releases
Weekly releases

Crashing/System

Bugs

[!] In some computers (1.75 GB of RAM, 32-bit, 2.71 GHz, Windows XP SP3, Java 1.6) the world will still not save blocks, but will save player configuration. Example seen here http://imgur.com/a/xixYo#0 (1st and 2nd screenshot taken in a run, the 3rd one is after reloading the world). Here's a debug profile made while placing the blocks, if it helps.

--Manuelschi 17:06, 5 July 2012 (UTC)


Annoyances

[A] My SMP server uses 60% CPU when no users are logged in. The 1.2.5 server used 40%. AFAIK, there is no good reason why it should use any amount of CPU when nobody is logged in. My server uses much more electricity than neccesary because of this. Thue 15:50, 5 July 2012 (UTC)

  • I'm running two servers on mac at the same time, getting a 2% CPU usage when noone logged in, it gets up to 50% when I log in from my computer (so, 2 Minecraft Servers + Minecraft Client). I usually got al least 75% usage on previous versions (same 2% when no one logged in). iMac 21.5 late 2010, 8 GB RAM (1 GB assigned to every server, and 2GB assigned to Minecraft client). --Asmcsl 17:03, 5 July 2012 (UTC)

Fixed/Skipped

[F] If you try to spawn a entity that is not a mob via spawner editing i.e. cart or boat the game will crash

--SoaringChris137 21:31, 5 July 2012 (UTC)

  • Spawner egg or mob spawner? Either way, the game is not supposed to give you the chance to do that. It's like trying to use a spawner egg to spawn an item entity, it will crash. Since it cannot be reproduced on vanilla minecraft without 3rd party programs i vote for deletion.--Manuelschi 22:53, 5 July 2012 (UTC)
  • It was a spawner block, like you find in dungeons, and because in the previous snapshot the special spawner permissions were added but only accessible through 3rd party editing I don't think this can be overlooked. --SoaringChris137 23:26, 5 July 2012 (UTC)
  • This has been fixed, but I really wouldn't call this a critical bug. It's custom behaviour that we've never supported before or had intentions of directly supporting. Dinnerbone 08:16, 6 July 2012 (UTC)

[F] [MP] Every user that logs into my SMP server gets kicked off immediately, with the following message in the console (no crash report recorded on server nor client): --Inertia

  • This may be caused by 'view-distance' in the server.properties file being set above the default value of 10. --Recondite 20:32, 5 July 2012 (UTC)
  • Good call. Indeed, it was the view-distance. I had it set to 15, but taking it back to the default (10) seems to have fixed it. But in the previous build, having it set to 15 seemed fine. --Inertia

Gameplay

Bugs

[!] [MP] Player 1 can push Player 2 around on their screen but Player 2 doesn't move on their screen. Therefore Player 1 can push Player 2 in lava and Player 1 will take unnecessary damage.-- QuAd205 03:00, 6 July 2012 (UTC)

  • I've had this happening too. Seems to glitch with any entity pushing the player. I was shot by a few skeleton arrows and walked around to hit them but saw them firing at a wall while I got hurt. Done using the minecraftserver.exe Lukesoccer21 05:42, 6 July 2012 (UTC)

[!] [?] Any blocks above Y=191 when logging into a single player world become invisible. Logging out on a structure above this level on SSP made me unable to move, place blocks, or break blocks because I was glitched into invisible blocks. --68.33.111.198 16:08, 5 July 2012 (UTC)

  • Seems to also occur in multiplayer for me. Anyone else able to add any more information? -TheWyo 23:14, 5 July 2012 (UTC)
  • Occurs for me as well. Can produce screenshots if need be. Also, the blocks seem to reappear upon a block update; the structure that disappeared for me was a farm so when farmed soil became wet farmed soil, it showed up. When melons grew, they showed up. Placing a block on the newly appeared blocks causes it to turn into whatever block is actually there (making the old block visible). Exiting the game and returning makes all blocks invisible again. -Bleaker 01:14, 6 July 2012 (UTC)
  • This happened to me in the Nether. I thought I screwed something up in MCEdit. I couldn't interact with the blocks, but they stopped my motion. I was flying upward into a ceiling of bedrock in creative. I could not break them or place blocks, though I didn't do much testing as I thought it was my world file. --5thHorseman 04:05, 6 July 2012 (UTC)

[X] [Cr] Crafting something in Creative Mode (I know, why should I...) in the 4x4 crafting field generates the crafted item and drops the old items like they were not used after closing the menu. I made four sticks with two pieces of wooden blanks in this Screenshot. Doesn't occur in Survival Mode. --Freakedenough 18:49, 5 July 2012 (UTC)

[X] [SP] Pick Block is not working. Ristovski 14:16, 5 July 2012 (UTC)

  • Is working for me, what block are you trying to pick and do you have it in your inventory? -- Mustek 14:28, 5 July 2012 (UTC)
  • Cleared inventory, can't use Pick Block on ANY block. Ristovski 14:33, 5 July 2012 (UTC)
  • Restarted Minecraft, pick block works fine now, I guess some LWJGL error. Ristovski 14:37, 5 July 2012 (UTC)

[X] When crouching next to a block that has vines, the player will "glide" as if on ice.

  • Default property of ladders. If you sneak on a ladder you glide just as you said. Vines have the properties of ladders, but you need to push against a wall to ascend. --Manuelschi 17:17, 5 July 2012 (UTC)

[X] With some bed placements, you fall out of the bed instead of sleeping in the bed. See File:Falloutofbed.png to reproduce this. Seems like some part of the game code still thinks the player is standing, so it's trying to prevent him from suffocating by pushing him away in some direction. -- JonHa97 18:44, 5 July 2012 (UTC)

[X] [SP] I destroyed many ice-blocks in a frozen lake with an enchanted axe (fortune III, efficence IV, unbreaking III) until the axe broke. The last ice-block disappeared and there was a hole. Around it there was water. I couldn't swim through it. I placed blocks from the bottom of the lake to the top and the ice-block I destroyed came back.

[X] Eggs thrown by dispensers will sometimes spawn chickens in a block. The chicken will suffocate and die. Other eggs function normally. ~Cm283 20:21, 5 July 2012 (UTC)

[X] Dropped items sometimes refuse to be picked up. I had a sapling that was dropped from a tree, and I couldn't pick it up. I tried to remove blocks under it, but that didn't work. After about a minute of walking through it, it popped into my inventory. http://i.imgur.com/jMcwx Happens rarely, but it has happened several times now, in different snapshots. --Blunderbrain 10:48, 6 July 2012 (UTC)

Annoyances

[A] When you die, and respawn (no beds involved), you are teleported to the highest point of the spawn region. This makes it hard for custom map makers to create indoor maps without players getting out of the map when they die. I don't know how long this has been happening, but I noticed it in 12w26a. --76.188.50.201 16:51, 5 July 2012 (UTC)

Fixed/Skipped

Blocks

Bugs

[!] if placing a block to make a wall and stand as close as u can it renders in a flash then disapears

[X] Piston at head-level doesn't push the player if standing against it. -- Mustek 15:30, 5 July 2012 (UTC)

[X] Standing middle of block that piston pushes sideways, makes you fall through pushed block. 93.106.53.238 08:24, 6 July 2012 (UTC)

[X] [SP] Priming a Tnt, exiting the world and then get back in the same world will cause the tnt to fall through the block under it. Video [1] -- AndyPala 15:52, 5 July 2012 (UTC)

[X] Normal-sized mushrooms can't be planted outside at night. This is because the skylight level is always 15, even at night, and the reason for this is so crops and flowers don't uproot themselves every night. Perhaps there could be a workaround for this. It is intentional that they're not supposed to be planted outside in the daytime, but they don't even work at night. TorchicBlaziken 20:39, 5 July 2012 (UTC)

[X] [SP] A piston with a redstone wire on a block diagonally up from it will extend when it shouldn't, and will not retract even if the redstone wire is turned off. Edit: Sorry, I didn't realize that it was the bud switch setup, I thought it was new. I withdraw the report. 4.30.62.18 21:18, 5 July 2012 (UTC)

  • not a bug. See BUD (block update detector). Too many ppl use that to fix this.
  • Shut up! This would break BUD switches created this way. Vote to remove :P <MCKMan> 23:44, 5 July 2012 (UTC)
  • Discussion --- User42 (talk) 00:18, 6 July 2012 (UTC)

Annoyances

[A] If you place a slab on a grass block (that has tall grass on it) from above (standing next to, looking down at where you are to place the slab), the game erases the grass and sets the block on the top half of the box. Common sense would say that the slab should replace the grass but be placed on the bottom half of the box. I assume this happens because the game uses the grass' bounding box to determine if the slab should be placed in the upper or lower half of the box. --5thHorseman 19:58, 5 July 2012 (UTC)

Fixed/Skipped

[F] Text on signs placed in previous versions is invisible in w27. Likewise text on signs placed in w27 is invisible in previous versions. – Unsigned comment added by 88.104.179.1 (talk). Sign comments with ~~~~

  • The signs just look blank (and equally, mobspawners look like pigs) but they're actually fine. Fixed! Dinnerbone 15:13, 5 July 2012 (UTC)
  • The text isn't saved like everything else. If you edit a sign in w27 it is erased and all signs will be blank upon the next time you load the map in w27. Yuki-nagato 02:48, 6 July 2012 (UTC)
  • It is saved...but the game doesn't display it.
  • (Merged duplicate) Text on signs is completely erased every time a saved game is opened in the new snapshot. Yuki-nagato 00:42, 6 July 2012 (UTC)
  • This was already reported on this page and I have already marked it as fixed. The text is there, it's not erased, it just looks blank in this specific version. Dinnerbone 08:20, 6 July 2012 (UTC)

[N] [X] When collecting Mushroom blocks with Silk Touch it will not preserve the damage value. TorchicBlaziken 23:49, 2 June 2012 (UTC)

  • Intentional behaviour, not a bug. Maybe an annoyance, if you want to move it there. Dinnerbone 10:43, 6 July 2012 (UTC)

[N] [X] When placing Mushroom blocks of a damage value greater than 0, it will revert to 0 upon placing. This used to happen with Monster Eggs, before they were tweaked in 12w17a to prepare them for inclusion in the Creative Mode inventory. This should be changed because the damage values of mushroom blocks are now available using cheats. TorchicBlaziken 23:59, 2 June 2012 (UTC)

  • Intentional behaviour, not a bug. Maybe an annoyance, if you want to move it there. Dinnerbone 10:43, 6 July 2012 (UTC)

Items

Bugs

[X] Collecting water with at least 2 buckets while stacked, will duplicate a third bucket of water. – Unsigned comment added by 96.38.81.51 (talk). Sign comments with ~~~~

  • This duplicate is ghost. It will disappear if clicked on inventory, or on reload/relog. 93.106.53.238 09:37, 6 July 2012 (UTC)

[X] Upon death and respawn, a compass will not point to spawn but to the coordinates X:8 Z:8. I've tried it in survival and creative. For instance: before death, the compass pointed to X: -224 Z: -148, where I was spawning, after death, the compass was pointing to X:8 Z:8. Quitting and reloading the world resets the compass. --MrMcCollen 01:35, 6 July 2012 (UTC)

Annoyances

Fixed/Skipped

World Generator

Bugs

[X] Temple lever is missing due to leaves generating in it's place. Seed:5394910515517466825 Temple Coordinates: X: -250 Y:70 Z: 206 Images Pwnoz0r 16:53, 5 July 2012 (UTC)

  • This bug can happen with anything, and it is a chunk error that has existed for a long time.--96.38.81.51 22:54, 5 July 2012 (UTC)

[X] You can spawn underground (See seed -2798893491947491437) – Unsigned comment added by 96.38.81.51 (talk). Sign comments with ~~~~

  • I dont think this is a bug. What do you mean "underground"? In a cave near the entrance/exit? Or just in some random place underground, and not near the entrance/exit? 173.70.127.149 00:08, 6 July 2012 (UTC)
  • Can't reproduce. Tried several times, spawned normal every time. 69.113.144.41 23:55, 5 July 2012 (UTC)

Annoyances

Fixed/Skipped

Mobs/NPCs/Animals

Bugs

[X] [MP] Using a tnt launcher, the player will hit a bump, fall down and then shoot up again. -- Mustek 14:29, 5 July 2012 (UTC)

[X] Mobs/Animals can push each other through wall, then they seemingly appear where they actually aren't. You can boost this effect, by making small quarters, on animals wielding wheat, and on mobs aggravating them. Maybe it's caused by pushing speed value added after animals/mobs speed value has been clamped by walls, when pushing speed value should've been added before clamping. --93.106.53.238 07:44, 6 July 2012 (UTC)

[X] Instead of looking at the player's head chicken look up if the player is below and down if the player is above the chicken --Bljat 17:46, 5 July 2012 (UTC)

[X] Pushing animals that are on fire with pistons causes the animal to no longer be on fire. ~Cm283 18:31, 5 July 2012 (UTC)

[X] Skeletons and Zombies do not burn in sunlight while standing on "normal" slabs. (They do while standing on upside down slabs) --Kumasasa 18:56, 5 July 2012 (UTC)

Annoyances

[A] There's a layer of white wool clipping through the top of pink sheep. -- Mustek 15:34, 5 July 2012 (UTC)

  • Consensus that this is pink, but perhaps too light a shade. Changed to annoyance per discussion, and discussion moved to Talk:Known_bugs/Version_12w27a#Pink sheep --Simons Mith 09:30, 6 July 2012 (UTC)

Fixed/Skipped

Graphical/Lighting

Bugs

[X] Inverted slabs still have incorrect lighting... (IMG) -- Mustek 15:32, 5 July 2012 (UTC)

  • Why are you using 12w26a in the screenshot when this is for 12w27a? -- Jamesking56 19:06, 5 July 2012 (UTC)
  • I think he just c&p the existing screenshot - where's the problem? --Freakedenough 20:35, 5 July 2012 (UTC)

[X] Z-Fighting on water when fishing. They're pretty big patches in the corner of the screen and are very annoying and distracting. Screenshot[2]

[X] Jungle biomes still are a major cause of lag. I am marking this bug as minor unless consensus is reached that it's actually major, despite my own opinions and experiences to the contrary. BrickVoid 00:25, 6 July 2012 (UTC)

  • I've removed the part of this report which has nothing to do with actual bug reporting. Please don't use this as a forum to express your opinions or ask Mojang questions. Use twitter instead. Also split the interface issue into a new annoyance --Mattrition 10:20, 6 July 2012 (UTC)

[X] The other players' fishing lines look like they start from the player's feet. --93.106.53.238 08:01, 6 July 2012 (UTC)

Annoyances

[A!] Interface redrawing is slowed signifcantly by in-game lag? What happens is that whenever I am in a jungle and experiencing lag, I hit Esc to enter into the UI to swap the graphics from Fancy to Fast, but doing this very thing means that the UI is lagged very badly until the Fast graphics are actually enabled in the UI. If Mojang could at least separate the draw/redraw of the UI from the draw/redraw of the world rendering I would be able to at least swap to a different rendering mode much more easily. Additionally, if Mojang could come up with an interim fix for jungle biomes that limits the amount of lag they are allowed to force into the rendering of the jungle biome until Mojang get to fixing it in 1.4 that would be very helpful to people lagging in jungle biomes. BrickVoid 00:25, 6 July 2012 (UTC)

  • An update to this bug, the lag still seems to happen in jungle biomes but the client is now apparently capable of reducing it although the fact still remains that jungles cause lag under certain circumstances. To anyone else experiencing this lag in a world generated in a snapshot prior to this snapshot, the current 12w27a snapshot does still lag in the same manner if you load a world generated in a previous snapshot with jungle lag problems. The lag the old snapshot generated may still cause the same lag, however, generating the same world seed with the new snapshot seems to cut down the jungle biome lag to almost nothing. I've tested this with a seed I use a lot, and it would appear that a big lag problem at the moment seems to be jungle temples, I don't know if this is directly related to the temples themselves, however, the temporary workaround I found for the last snapshot still seems to work. Go to the graphics option, and then switch from Fancy to Fast graphics. Switching back to Fancy graphics also appears possible if sufficient time is given for the client to recover while in Fast graphics mode. BrickVoid 05:46, 6 July 2012 (UTC)
  • I've changed this to a major annoyance. It's not a bug but it is annoying. I split the interface annoyance away from the "jungle lag" issue. I have also altered the start of the report because of the split. --Mattrition 10:22, 6 July 2012 (UTC)

[A] Strange water behavior. Floating water connects to an ending water flow one block above. 92.195.49.205 17:41, 5 July 2012 (UTC)

[A] When riding minecarts underground in a 1x2 tunnel around corners the 3rd-Person-View resets often to 1st-Person-View --Kumasasa 18:40, 5 July 2012 (UTC)

[A] When riding minecarts underground in a 1x2 tunnel around corners the screen blackens for a short moment --Kumasasa 18:40, 5 July 2012 (UTC)

  • It happens because you enter inside the blocks in the corner --Gil2455526 22:21, 5 July 2012 (UTC)

Fixed/Skipped

Sounds

Bugs

[X] Rain sound not playing in extreme hills biomes. – Unsigned comment added by Randy L (talkcontribs). Sign comments with ~~~~

Annoyances

Fixed/Skipped

Chat/Commands

Bugs

[X] /tell command still doesn't work. First reported by QuAd205 in 12w26a. --Warr1024 17:38, 5 July 2012 (UTC)

[X] Teleporting using /tp command and direct coordinates does not work properly, one is taken to correct area, but y coordinate does not seem to apply, and one seems to fall thorough world, and into void sometimes taken to correct elevation after taken some damage and sometimes death occurs sometimes one is not taken to direct area but general area around selected coordinates. Outcomes vary widely, but usually it does not end well, recreated on windows vista and 7 on 2 computers. Problem can be recreated at any time by typing /tp <x coordinate here> <y coordinate here> <z coordinate here> you can find the coordinates you are at by hitting F3

[X] /tp [player] [x] [y] [z] Does not allow using decimals, this causes player to teleport middle of four blocks instead of middle of one. 93.106.53.238 08:36, 6 July 2012 (UTC)

[X] When clicking on links, the warning is still a very light red instead of the darker red that it should be. caramba2654 03:07, 6 July 2012 (UTC)

Annoyances

[A] Minecraft still says "Saved screenshot as <filename>.png", even if German language is activated. In German it should be "Screenshot wurde gespeichert als <filename>.png.". I think other languages aren't translated too. – Unsigned comment added by Freakedenough (talkcontribs). Sign comments with ~~~~

  • Occurs in [SP] and [MP] , contrary to other messages (e.g. "<player> fell out of the world") which are in local language in [SP] (e.g. "<player> ist aus der Welt gefallen") --Kumasasa 19:09, 5 July 2012 (UTC)
  • Occurs with any language, not only German.
  • This is because that string is hardcoded in the game, and it not editable in the languge files. I think that is because they have to append the filename, and that has to be done through the code. --96.38.81.51 22:58, 5 July 2012 (UTC)
  • You can code it replace specific markings on string. String: "Hello %string%. Isn't it great day", code then replaces "%string%" with needed string. --93.106.53.238 09:24, 6 July 2012 (UTC)

Fixed/Skipped

Menus

Bugs

Annoyances

Fixed/Skipped

In-Game Interfaces/HUD

Bugs

Annoyances

[A] Now that the other wooden stair types has been added, the "Building Blocks" section needs to be reordered, also Oak Wood Stairs needs to go right before Spruce Wood Stairs. Image: http://h9.abload.de/img/2012-07-05_19.05.556px8y.png

[A] Emerald Blocks and Emerald Ore Blocks are coloured grey on Maps (Might also apply to other blocks that were added recently) [Note: This entry has been deleted before without a fix being confirmed. In case it is already fixed, feel free to delete] --Supersonic112 22:33, 5 July 2012 (UTC)

Fixed/Skipped

Language/Text Files

Bugs

[X] [SP] Issuing "/kill" in singleplayer creative throws the message "<Player> fell out of the world" in current selected language and "Ouch. That look (sic!) like it hurt." regardless of the selected language in English.

[X] [MP] Death- and other messages are always in English regardless of the selected language.

Annoyances

[A] Bad characters on output commands text in spanish (doesn't occur when chatting): [3] --Asmcsl 02:48, 6 July 2012 (UTC) (signed, I forgot, sorry)

Fixed/Skipped

References

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