I upgraded to 1.13 from 1.12 and moved to another location on the map where I thought I could locate turtles. I came across a wall of tall kelp and then found an unusual matter that seems very much like a bug many others reported in the past and was fixed. This world had not been upgraded from 1.12 to any snapshot of 1.13.
In this case, random water or air columns appeared much like in MC-129625 and there is no coral to be found. Another strange occurrence was that there were multiple turtles in the area when I found it, however they will not return to this area. Additionally, when it becomes dark, these air columns give off light and mobs will spawn here but not enter the water. They will however, randomly appear on top of the water above these areas.
I was able to swim down and lure several zombies into eventually entering water and becoming Drowned, however they carry nothing at all times.
What I expected to happen was...:
I expected an object to be where the air columns are, either corals or sea grass.
What actually happened was...:
There was partially lowered ocean, where large areas of these columns glow at night and mobs spawn but without any items.
Steps to Reproduce:
Enter seed or load world and jump to my area. Examine the unusual water below.
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Today checked with latest release 1.13.2 and this issue still persists - with upgrade from 1.12.2 world. This is the same world shown above.
In the images above, the water in this seed is shown. There is also an image of the same view but up higher and at night. Lastly, the other images confirm that it was present even when moving to a fresh release of 1.13.1 and it appears this will also occur with 1.13.2 - I will see if there is a means to get closer telemetry as this is a survival world with no cheats.
Thank you for your report!
However, this issue has been temporarily closed as Awaiting Response.
Do you have a backup of the world from an earlier version (preferably 1.12.x)? If so, please attach (or provide a download link of) the world here so we can reproduce the issue.
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https://drive.google.com/file/d/1dcdKdXFLjv9l4myye9bmN8w-m1AqVlvA/view?usp=sharing
This backup should be of 1.12.2 and the same seed
It is. I just opened the same world that has been played in 1.13.2, due to a large amount of progress. I went back to that area and it appears they are still there, perhaps less but still many columns.
See attached.
[media][media][media][media]
Indeed, I actually backdated the backup from the upgrade and the previous file was 1.12.2 - I just upgraded from this same file to 1.13.1 and went to the same area. The issue persists but what are these and where's the corals and seaweed?
Seed is 4630973706159243126 at 618 62 -329