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MC-121636

Server commands available in singleplayer with weird/bad effects

Exactly as the title states, causing bugs like MC-121629. Will continually update with consequences of all server commands. Commands of note are listed:

  • /kick: Exits the world and returns the player to the multiplayer menu.

  • /ban: Exits the world and returns the player to the multiplayer menu. Does not prevent future access to the world.

  • /deop: Appears to deop the player and restricts access to F3+N, but the player can still run commands. Running /op yields that the player is "already an operator." Access to F3+N is regranted upon a reload Thanks to @unknown.

  • /list: Prints the player alone as expected. (this may be WAI, as it has no reason to be limited to multiplayer)

  • /save-all: Saves the game as expected.

  • /setidletimeout: Doesn't appear to do anything (I don't think ops get kicked anyway).

  • /stop: Exits the world and returns the player to the multiplayer menu (a la MC-45602).

Linked issues

MC-121629 If you kick yourself with /kick in singleplayer, the game freezes Resolved MC-121659 Clint freezes after being kick from a local world Resolved MC-121717 Kicking yourself in Singleplayer freezes the game Resolved MC-121840 Deop your self in singleplayer Resolved MC-121908 Commands like /ban, /kick, /stop are usable on singleplayer Resolved

Comments 9

Phoenix SC made a video about this with some other facts as well: What Happens if You /ban Yourself in Single Player

/pardon:
1.13-snapshot: Console outputs "Nothing changed, the player isn't banned" when trying to unban a user that was /ban ned.
1.12: Console outputs "Unknown command".

Also, this bug doesn't seem to work with /broadcast .

EDIT 2: I'm using Windows 7 for this.

@James Mills Of course it outputs "Unknown command" in 1.12, this bug says that these command become available in 1.13. Also, pretty sure /broadcast isn't a command.*

*I checked, and it was in Classic, but it was replaced with /say.

I tried /ban on me and it said banned off singleplayer world and server quits and i came back to my world none banned,

But i try on /ban on sp lan player now another player cant join

and i /pardon that player banned and player join again!

Still an issue in 18w21a, if I do /kick on myself on my LAN server, the game freezes.

/kick on a lan server should probably be enabled (probably). However the issues with freezing are supposed to be fixed; at least, they were when I tested MC-92255... hm.

Mateus Pereira Milbradt

/setidletimeout 1000000 kicks the player from the world because of idle time out.

Michal Onderco

I can't run any of the commands, but I can run /kick

tryashtar

michael

Confirmed

command, multiplayer, server, singleplayer

Minecraft 17w45a, Minecraft 17w45b, Minecraft 17w46a, Minecraft 17w47a, Minecraft 17w48a, ..., Minecraft 18w08b, Minecraft 18w10d, Minecraft 18w11a, Minecraft 18w14b, Minecraft 18w16a

Minecraft 18w19a

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