Known Bugs And Glitches

''This is a list of Bugs and Glitches currently in-game. If you find a bug, please list it below to allow others to see.''

Keep in mind though, just because a bug can be exploited doesn't mean you should. Duplicating items may seem like a good thing to do at first, but it can rapidly make the game a lot less fun to play.

''NOTE: This is a clustering of various separate bug and glitch pages. It needs cosmetic and redundancy work done on it.''

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Contents
[hide]*1 General:
 * 2 Gameplay Multi-Player:
 * 3 Visual:
 * 4 Audio
 * }

General: Edit

 * The Hermes Boots can let you fall through gaps in the floor one square wide if you run into a wall just above it fast enough.
 * A one block high space allows slimes to spawn, but also allows them to jump through the floor as most slimes are two blocks high
 * NPCs continue to occupy a general area even if it is no longer 'suitable' for NPCs
 * Blowing up a chest with dynamite causes the chest to duplicate 10+ times. Also, forming obsidian over the top half of the chest leaves you with the bottom half of the chest that can be "removed" infinitely, allowing for infinite free chests.
 * Upon forcing the game to quit, (ie Windows Task Manager), the game saves the items in one's inventory, but any blocks placed or changes to the terrain will revert to the last time the game was saved correctly.
 * The lighting effect of a meteor crash site may remain even when all meteor blocks have been mined.
 * Meteors will crash onto very thin bridges of blocks, essentially wasting the event as there is usually not enough meteorite created to spawn meteor heads
 * Placing a torch onto a piece of wild grass next to a door causes the torch to duplicate. This bug can be exploited to have a lot of torches without getting a lot of slime gel.
 * Placing two doors adjacent to one another and repeatedly opening and shutting them may lead to one of the two doors glitching, which results in spawning an infinite number of duplicate doors whenever the adjacent door opens or closes. Though extremely tedious, it is possible to exploit this glitch to earn significant amounts of gold, as each stack of 99 doors is worth nearly 40 silver.
 * Grappling onto the middle of a door (just above the doorknob) and opening the door will fling you forward at the grappling hook's pulling speed
 * Selling to a merchant (tested on gun dealer) when less than 100 silver coins in inventory but the sale brings you to over 100 silver, the silver rolls over back to 0 and you lose the 1 gold.
 * When large amounts of water are in motion, the server's performance can be brought down significantly.
 * In some map instances, it may be impossible to find certain unique items.
 * NPCs sometimes have pathing issues when attempting to reach their rooms.
 * It is possible for a small puddle of water to turn into a never-ending waterfall when the bottom is dug out.
 * When the Nurse stands on a chest and right-clicked, her dialogue is broght up for approximately two seconds before the chest suddenly is opened.
 * Jungle shrines can be generated in lava pools with no chest inside them. (Screenshot)
 * Jungle shrines can be generated in the sky (~15 blocks above the ground) (Screenshot)
 * Sometimes a huge amount of mud can be found at the surface if a jungle is close to the surface.
 * Fall damage is inconsistent when landing on anything 1 block (somtimes more) thick.
 * You cannot make a spawn point with Dungeon Bricks and/or Walls.
 * Hellstone walls cannot be picked up. (taken from Hellstone Wall )
 * Dirt walls cannot be picked up.
 * The Molten Fury is supposed to shoot Wooden Arrows as Flaming Arrows, but these arrows will still deal Wooden Arrow damage.
 * Demon eyes can sometimes travel through 1 block thick dirt.
 * The Cloud in a Bottle does not negate fall damage when used right before the player hits the ground.
 * The Merchant, Demolitionist, Nurse, Dryad, and Arms Dealer sometimes fail to spawn, even though there are valid houses in the world. It seems this can happen to any NPC in the game.
 * If the game crashes unexpectedly, is then restarted and the same world reloaded, all blocks are removed and the player falls directly to the bottom of the map causing them to die. All world data appears gone and cannot be retrieved although map files still exist.
 * Sometimes the background when underground (rocky and mud-rocky) with start to follow you and glitch, jerking about in random motions, there is currently no known fix to this bug. Although waiting for a Terraria update may help, for they reset all files on update.
 * The crashes upon exit from the title screen on some games.

Gameplay Multi-Player: Edit

 * There seems to be a problem in the Client-Server synchronization causing monsters to suddenly teleport to another location when they are dealt damage by the player. This can make it dangerous to fight creatures online because they often teleport into the player, doing damage when the knockback should have kept the player safe from damage. Server specs don't appear to help this very much, so it's most likely caused by buggy net-code in the game. This is particularly noticeable for Meteor Heads.
 * Latency can cause items to not be picked up.
 * When the game crashes and the player returns to the server all existing chests in the game cannot be opened.
 * Multiple 'Nurse' may spawn when more than one person gets a life upgrade on the server.
 * Stars that fall but are unobtainable. Some work normally but there are some that fall in clusters of 2-3 next to each other but players are not able to grab them.
 * If you place a chest onto any block type, break it and try to replace it onto the same 2 blocks, it is unplaceable. The block type doesn't seem to matter. Relogging from the Multiplayer server seems to fix this issue.
 * If a client's program crashes or ends unexpectedly, the client's character won't save and will still have the same inventory that they had at the start of the session. This can result in items duplicating or disappearing entirely.
 * Sometimes, holes will inexplicably appear that lead tot he bottom of the world. Since this does not happen in singleplayer, it is assumed to be a server-side bug,
 * If you minimize the server window, the time goes faster (when clicking the server window button in the task bar, might only happen on Win 7/Vista.). It looks like the sun and moon "teleports" forward. And the monsters are super fast. Maximizing the server window fixes this.
 * Game may crash when you break 4 Shadow Orbs in a row.
 * Game may crash if you save your spawn point in a bed and reconnect - the server must be reopened.
 * If the players fail to kill Skeletron, the old man may not respawn. The players will still get attacked by skulls in the dungeon itself. This bug seems to occur if a spawn location is set within sight of the Skeletron.
 * If players set a spawn point that is at the "end of the world" (past the beach and over the water) and disconnect from the server, they will be unable to reconnect. The reason for this is unknown, and the problem is fixable if the affected players connect to the world in single player and reset their spawn point.
 * Setting a spawn point at a high elevation (i.e. on a floating island) may cause a player to be unable to reconnect.
 * The Eye of Cthulhu may fail to spawn when summoned.
 * While time-warping (manipulating the passage of time by clicking and dragging the moon/sun in the server window), it is possible to sometimes lose the sun or moon. The will respawn once the day/night is over. It is unknown at this time whether this is a measure to prevent users from abusing the time-warp function.
 * Closed doors can sometimes appear to let people in when connected to a server due to poor handling of latency.

Visual: Edit

 * Alt-tabbing in and out rapidly can cause unusual colors. Alt-tabbing again fixes.
 * When playing a world for the first time there is a chance no Hud/GUI is displayed. (Can be fixed by pressing F11)
 * Moving to fullscreen causes all things to speed up i.e. the sun and moon move at an increased pace. The cursor also speeds up, this also affects single player. (multiplayer not known) It is widely suspected that this is because your monitor's refresh rate overwrites the game's when running it in fullscreen.
 * When running the game in windowed mode, clicking on another window that doesn't cover the Terraria window will cause any light from Mining Helmets to vanish (does not occur in multiplayer). Clicking back into the window allows the Helmet to light correctly. This does not affect the game, as it pauses when another window is clicked.

Audio Edit

 * Both the day theme and night theme can play at the same time if the change happens on the instant of the current song being re-looped. This will last until the theme playing before the change of day/night starts a new loop.

Turbo DoorEdit
For this, you need a door and grappling hook. Shoot the hook at the door, open it and you should fly quickly through the door. Also works with Ivy Whip

Item CloningEdit
Item cloning can be performed by placing an item in a container on any server, saving the server, then starting it again. Once the player revisits the container, if they take the itemt, disconnect, then close the server improperly (such as alt + F4 on the server tab) without letting it save, the item can be found yet again in the container. For example:
 * 1) Player A leaves item A in a chest.
 * 2) Player A disconnects.
 * 3) Server is disconnected/saved.
 * 4) Server is reconnected.
 * 5) Player A connects and takes item.
 * 6) Player A disconnects.
 * 7) Server is closed abruptly without saving the map.
 * 8) Server is reconnected.
 * 9) Player A joins.
 * 10) Player A takes item A and now has a duplicate.

Double DoorEdit
For this glitch, you must have at least 2 players.

One player opens and closes the door rapidly and the other destroys it. You should get a drop of 2 doors.

Flying Chest On SandEdit
For this glitch, you must place two columns of sand.

Place a chest at the top of the sand, and destroy the sand under the chest. Flying chest!

Water eating Door

Place a door under water and constantly open and close it. The water will slowly disappear up to the base of the door.

General

 * The game can speed up for no reason, unknow if it also happens in multiplayer, mainly happens when game is first loaded up.
 * If you build a house ontop of the dungeon and set spawn, your map will become destroyed and unplayable.
 * It is possible to use the grappling hook or it's variants to go through tight spaces you can't normally get through. This can kill you if you try to do it near sand.
 * If a block is on the spawn, it will dissapear when someone respawns or uses a magic mirror.

Single Player

 * If an NPC opens your door and you continually right click it, the door disappears.
 * Parts of your home can disappear for no reason.

Multiplayer

 * The eater of worlds doesn't spawn after destroying 3 orbs of corruption in a huge map.