In my sugar cane farm, I have row of 8 observer blocks facing downwards with redstone dust on top. These observers are supposed to detect when a sugar cane reaches a height of 3.
After some time, I came back to the farm and all the observers were stuck in a powered state.
Removing the surrounding blocks and the sugar cane did not change anything.
The only workaround was to remove all the observers and place them back.
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As you can see in the second screen shot, all the observers stay powered, even when there are no block in front of them.
The power comes from the observer blocks who actually output a constant signal
Is this still an issue? If so, please attach a new superflat world with a small test setup to reproduce the issue.
Sorry sir, but I couldn't find a way to reproduce the issue. It seems to happen randomly, or I missed something. I just can tell that it happens.
I'm having the same issue. The sugar cane has grown where observer should have seen it and fired. I don't have a screenshot, but the redstone behind the observer was not powered until I broke the glass on top and then it became powered and stayed powered for the entire run of the farm. No repeater loop anywhere as there are no power sources on the redstone dust other than the observers. Seems to have happened after leaving the area and returning after some time.
@Conrad Herman
I used two "/fill"s for every possible orientation of the observer (north, south, west, east, up, down).
The first one replaces every observer facing in a certain direction (e.g. North) with a dummy block (e.g. Bedrock, that is not part of the volume selected).
The second one replaces the dummy block (in this case Bedrock) with the observer in the chosen direction (in this case North).
Example:
1) /fill x y z x1 y1 z1 bedrock 0 replace observer facing=north
2) /fill x y z x1 y1 z1 observer facing=north replace bedrock
You have to do the same thing for every direction (6 times).
Remember to use "strange" dummy blocks (like structure_void) to be sure not to replace other blocks.
Works in 1.12.
A thing I noticed while using MCEdit is that the stuck-buggy observer becomes a non-recognized block: this means that it has invalid tags.
I think it doesn't get updated because of that.
Is this still an issue in the most recent versions (currently that is 1.12.2, or the latest 1.13 development snapshot 18w07c) of Minecraft?
I played a few weeks ago on 1.12.2 and the bug was still there. Never tested on recent snapshots, this is a random bug so it is hard to test...
Same issue in bedrock (Windows 10) - https://bugs.mojang.com/browse/MCPE-33810. Attached a video that shows the issue 'in action'
[media]
Most likely a repeater loop.