Issue: When loading a world, if you are within the same chunk as a campfire, the campfire creates a block update, even if it has not changed states.
Test: Place a campfire on an observer, and connect this observer to a t-flip-flop to more easily observe result. Then leave the world and come back, while taking note of the state of the t-flip-flop. Note: There must be a single item inside only one of the hoppers, which, as it is triggered, will move to activate the comparator, or deactivate it respectively.
Expected Result: The T-flip-flop should not change state, because there has been no observable state change from the campfire.
Actual Result: The T-flip-flop does change state even though the campfire has not.
Notes: Upon leaving and entering chunks, it does not appear that the campfire updates. Further, if you unload the chunks, which contain the campfire, previous to leaving and reloading the world, the campfire does not create a block update. So the only situation is when you are within the chunk containing the campfire. and you leave the world and return.
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Is this still an issue in the latest version (1.17.10)? If so, can you please add it to the affected versions (or mention it if you are not the reporter).
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This issue is still present in the 1.17.11 Hotfix, I've just updated the post.

Thank you for your report!
However, this issue has been temporarily closed as Awaiting Response.
Is this still an issue in the latest version? If yes, can you please add it to the affected versions (or mention it if you are not the reporter)?
This ticket will automatically reopen when you reply.
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Still present, affected versions updated.

I could not reproduce even after building the "t-flip-flop", can you attach a video of this happening?

In this particular t-flip-flop, a single item is required to be inside one of the hoppers, and I neglected to mention that. I will update the post right now. Is there one in your build?

After seeing 1.18.3's patch notes, I tested the double chest, in 1.18.2, in place of the campfire and did get the issue that was resolved by
Observers placed facing Double Chests no longer send out a Redstone pulse when reloading/re-entering a chunk
Then I tested the double chest in 1.18.3 and the issue with the double chest was indeed resolved, however the problem persists when I retested campfires.

Hi
Does this issue still occur after updating to 1.19.30?
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This issue is still occurring after updating to 1.19.30

I want to apologize that this report has been kept open for so long with repeated asking if it's still an issue. The bug is already tracked at MCPE-29548, so I am resolving as a duplicate.