Basically, the glitch is that fill, setblock, and clone commands are all useless. Upon activation, NOTHING happens. The reason this issue is major is because these 3 commands are a major cornerstone of Minecraft mapmaking.
To reproduce:
Start up a singleplayer minecraft world.
Try to use any of the commands listed above with correct formatting.
You should see that the command was executed, however nothing happens to your minecraft world. This second part is the glitch.
Recommended actions to take: Make fixing this bug top priority. Minecraft's popularity is as a result of player made projects such as custom maps.
Comments 5
Thank you for your report!
However, this issue has been temporarily closed as Awaiting Response.
We do not have enough information to find the cause of this issue.
Please force a crash by pressing F3 + C for 10 seconds while in-game and attach the crash report ([minecraft/crash-reports/crash-<DATE>-client.txt|http://hopper.minecraft.net/help/guides/finding-minecraft-data-folder]) here.
Once attached, the report will be reopened automatically.
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Does running
/reloadsolve the issue?