Minecraft Softlock with Commandblock-Clock

Put the summary of the bug you're having here

What I expected to happen was...:

i thought i could create a Clock to Always kill enderdragons when they spawn, because a friend of mine built a endlessly spawning Command Clock, when the world was opened to LAN

What actually happened was...:

i made a mistake in the command, and then the Commandblock killed everything, including me

since there is just a 1 tick delay between the Commandblock activations, i cant do anything besides Opening the ESC menu, and respawning (and of course leaving the world) 

So now im in a Softlock state where i Always die as soon as i try to do something

 

Steps to Reproduce:
1. Place a commandblock with the command /kill @e[!minecraft:ender_dragon]
2. attach a Redstone Clock (to make it insane, one with 2 observers facing each other)
3. enjoy dying for the rest of eternity

 

 

I know its not realy a bug, and i have an idea how to save myself, 

 

but a button in the ESC menu to deactivate all Commandblocks, would be quite helpfull in such a situation