Set any attribute value and repeat the command. The value will be changed, but in reality this is not the case and an error message should be displayed.
To reproduce
While having a base bounciness attribute of 0d (the default), run /attribute @s minecraft:bounciness base reset
❌ The command succeeds even though no changes were made
Linked issues
relates to 4
MC-174958
`/gamerule` succeeds even when the value is not changed
Resolved
MC-305707
`/time` reports success when no changes are made
Resolved
MC-307707
/data returns a message about the successful modification of the entity data, despite the fact that non-existent entity data was specified
Resolved
MC-266126
/tick unfreeze and freeze both return their positive outputs even if the game was previously in that state
Resolved
Thank you for helping us improve Minecraft! We saved your files: