when I do /clone in a command block it sometimes censors not always i typed in random number it censored also when I did /clone -1498 6 -1497 -1498 6 1497 ~~-10 ~ it censors after I leave the block and re open it and it only happens when I put in the seconds set of coords

Before i close out with only one set of coordinates

after nothing happens and it doesn't get censored

before I close out with the second set of coordinates

after I reopen the command block

it also doesn't censor on my worlds.