I own a realm and for some reason today when my friends and I were logging on to run some code and test out stuff the command blocks would reset whenever we tried to use them. We tested things like /say and /kill and whenever we exited the command block it immediately cleared what was put in the command input. We even put "Hi" and it cleared. Whenever we set a command block that was originally an impulse command block to a repeat command block it would automatically set it back. We were originally worried that it was a hacker on the realm but I saw a report very similar to mine. I hope this isnt a major bug concerning other realms because that would suck. If you need more information then I would happily provide more, however the main issue is the fact that the Command blocks keep resetting.