I created a redstone machine using Redstone Repeaters, Redstone Dust and a command block. It transmits a command every minute or so to set the time to '1000.' I set the redstone current and it worked perfectly fine. I kept it going whilst creating a Rube Goldberg Machine using a zombie, a villager, 2 pistons and a redstone current. I logged off and went back on the next day. When I came back on, I went back in to check if any mobs had spawned inside and discovered 2 redstone currents going behind each other both giving off a separate redstone current about 2 repeaters apart. I fixed it hoping it was just a 1 time glitch and carried on with my rube Goldberg machine. I logged off and installed optifine to improve my frames a bit. When I logged back in, I checked it again only to find 3 redstone currents! I did this 2 more times, but it kept on escalating one every time. eg. 1, 2, 3, 4, 5 I checked the redstone and it wasn't linked up to anything else. The rube Goldberg machine is about 40 blocks away. I hope you fix it before it gets too high a number to crash the game. The picture below shows my redstone contraption. End of Report.

I just checked again and it only happens if you log in 24 hours apart after the bug