Since previous versions I have been manipulating command blocks and I always find that the time comes when the block forgets what type it is.

Approximately 20-30 minutes after handling the command blocks, it is time that when I switch between block mode (chain-repetitive-impulse) the texture changes but the block stops working, it does not respond to the Redstone.

If I give myself new command blocks using creative (/ give) these arrive with the information of empty block mode and even if I try to update it using redstone the block remains the same, having no choice but to create another world to continue using them until the BUG happens again.