Steps to reproduce:
Create new world, have the "activate cheats" toggle off when setting it up (set it up so it's possible to get xbox live achievements), enter world as you normally would to create it, then leave the world.
Create a copy of the world via the world settings menu, don't enter it yet.
In the world copy settings menu, change gamemode to creative using the default game mode dropdown in the menu
Enter the world copy
Try to use a cheat command like /locate, /tp, /time set, /gamemode, etc., it will not let you do so, instead giving you "Unknown command: [blah blah blah]. Please check that the command exists and that you have permission to use it."
What went wrong?
Commands that usually work when cheats are turned on don't work with cheats turned on. When you toggle gamemode via the menu while in the game (but not out of the game in the world settings menu on world select), it does seem to kickstart the permissions and allow you to use cheats on that world.
TL;DR: When you make a copy of a world with cheats off, the cheats off carry into the copy even if cheats are on in the copy. Minor annoyance.
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Cleaning up old tickets: This ticket has not been updated recently (~1 year+) so is being closed as Cannot Reproduce. If you feel this is still a valid issue then please comment, or create a new ticket following the Issue Guidelines.
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I am able to reproduce this issue. It appears to be an issue with player permissions not updating when activating cheats on a copied world. It’s unknown if this is intended behavior or a bug.
Version: 1.8.1
Device, Platform: iPhone 8, iOS 12.1.3
Expected behavior (control/reference):
Creating a new survival world without cheats activated assigns the player Member permissions.
Expected behavior (control/reference):
Creating a new survival world with cheats activated assigns the player Operator permissions.
Observed behavior (test/issue):
Copying a survival world (World Settings → Game → Copy World) without cheats activated and then enabling cheats does not update the player permissions from Member to Operator.
Workaround:
Load the coped world (with cheats now enabled) and change your player permission level to Operator. Pause → Player Permission → Operator (crown icon)