The bug
I encountered a particular oddity, in which an end ship was cut at the front portion where the Elytra would generate at. I suspected that I was standing at the edge of a chunk, and sure enough, I was. I don't know how, but something about end ships get messed up at the chunk border.
How to reproduce
Seed: 8267213705029167797
TP command: /execute in minecraft:the_end run tp 3072 135 -6024
Related issues
is duplicated by
Attachments
Comments

Sounds like MC-96998
Seed and coordinates? If this could be reproduced regardless of whether the terrain has been interrupted then it's not MC-96998. Edit: confirmed that this is consistently reproduceable

I added the seed and coordinates, they are in the screenshots.
Can confirm. For easier copy-pasting:
Seed: -237545423493512
/execute in minecraft:the_end run tp @s -1249.524 136.5 6607.843 -59.3 44.4
Looks like a clone of MC-125615 (which was fixed about a year ago)
MC-125615 had the exact same issue that caused the front of the end ship to be cut off for some end cities.

Yeah it does look like that bug, which makes things even stranger because that bug was apparently fixed. Has it returned with a vengeance?

I've encountered this for 2 different end cities on 1.14.2 and opened up MC-153193 for it before seeing this report. Restoring from a backup and regenerating the end city does not resolve the issue.
Seed: -1512708869162518012
City 1 Coords: 1000 65 130
City 2 Coords: -530 90 -880

Still in 1.14.3 Pre Release 1. Attaching images for cities reported above.
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Encountered the same issue today.
Game Version: 1.14.2 (Realm and Single Player)
Seed: 2085323405396050569
Coordinates: 1556/140/-241
End ship cut in half without elytra. The parts that are missing are in different chunks than the parts that are there.

Hmmm... I still encountered this issue in 1.14.4...
Game Version: 1.14.4
Mod used: optifine
Seed: 8267213705029167797
Coord: 3072 135 -6024
The front half of the ship was cut off. Gone my first elytra in minecraft ever after hours of raiding end cities...
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This is still an issue in 1.15.2
Most of the ship didn't generate
Version: 1.15.2
Mods used: none
Seed: 2633762998494211082
Coordinates: 1600 165 1220
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Ughh I can confirm this. You might not get the elytra from the ship in certain circumstances.

Affects 1.16.1

In 20w27a

Also affects 20w28a, End City Structures don't genrate correctly over chunk border.
2020-07-11_02.17.13.png|thumbnail!
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Do you want some elytra? ME TOO!!! 6 of 10 cities in the end with proplem like this! Version 20w29a/snapshot
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Can confirm in 21w03a.
Can confirm in 21w05b.
Can confirm in 21w06a, using the provided seed + coordinates.
Can confirm in 21w17a.

Still an issue in latest version, 1.17

Can confirm in 1.17.1 Pre-release 2.
Can confirm in 1.18.2.
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This is still happening in 1.19
Seed : -5028400232552047653
Coords: -209 ~ 2613
Back half of end city ship cut off

Can confirm in 1.19.4
Seed: 6521588580909292871
Coordinates: -2150 ~ 845

Can confirm 1.20.1
Seed: -4680646807128482073
Coordinates: -1483 151 -2307

Can Confirm
1.20.4 with 1.21 features enabled
Seed: -8344665212290078795
Coordinates: -3254, 145, 5883

The end city/ship seems to only generate in 17*17 chunks (center of which is the beginning chunk of end cities' generation). So, if an end city generates begin at chunk(64,64), it can only generate from chunk(56,56) to chunk(72,72), if it tries to generate out of the area, it will be cut off.
for example, seed 9831989842559 in 23w51b:
/execute in minecraft:the_end run tp 896 148 70
The end city generates begin at chunk(64,4),so it can only generate to chunk(56,4), then the end ship cut off at X=896.

Can confirm
Version 1.21.1
Seed: -3648792406978782213
Coords (XYZ): 1262 151 -1982
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Confirmed in 24w46a

Can confirm in 1.21.4
Seed: 11451 (Large Biomes)
Coordinates: -783, 132, 4872
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@unknown: Your game is modified and thus not eligible for bug tracking. We will only accept issues and new affected versions if they occur in a completely vanilla environment in worlds that have not previously been opened with modified software.