I was playing Minecraft recently on a Survival Multi-Player (SMP) server running the latest Minecraft Beta (1.8.1) and noticed after I logged in that Redstone circuits that had been working fine previously had just stopped working. It appeared that the “NOT Gates” would stop working on the seventh cycle, at which point the “NOT Gate” would stop working and the Redstone Torch wouldn’t re-light.

I scoured the inretnets for a while and couldn’t find an answer, if only because the search term was probably tough to parse. An example being: “Minecraft NOT Gates not working”

THAT BEING SAID, I finally was able to source a video by a user on YouTube by the name of “Moleculor” in which he demonstrates the same issue.

Luckily, this YouTube Video finally pointed to me at the official bug report on the issue here.

Essentially the issue is caused when a Server Admin uses the “/time set” command, which mucks with the internal timers when the time gets shifted. The only way to fix the Redstone circuits is to restart the server and to prevent it from happening again, your server admins will need to stop using the “/time set” command until this defect is fixed.

Hope this helps other folks out there as well.

Cheers!