Hello Mojang!

So me and my friends  are working on an semi survival world with altars  and then suddenly my friend crashed  cause an unexpected error accured out of nowhere 

when we joined back into the world i noticed all the commands stopped working

so i tried to fix them by switching them from "Always active "to "Needs redstone"

and then back  but i noticed the chain commandblocks  are stuck on +Impulse+ mode 

and every new commandblock we place ,is too and nothings working anymore, we tried exiting the game and rejoining but it still is bugged