I saw a lilypad generating on a block, which i think doesn't work as intended.
Reproduce
Seed: -2673931441407680092
Coordinates: /execute in minecraft:overworld run tp @s -116236.51 61.88 3907.52 -565.53 22.00
Expected Result
The lily pad wouldn't generate on blocks that aren't ice or water
Linked issues
Attachments
Comments 10

Okay

It could be beneficial to rename the issue so that "structure blocks" is not confused with the actual structure blocks.
Yes, that confused me as well, before I clicked on it. I'd recommend changing that to, "blocks from structures" or something like that.

The seed is 2686092101085001154
, writing to make the issue easier to reproduce. Affects 1.17 Release Candidate 2.

I suspect this also affects ruined portals based on other reports, but I wasn't able to find an example seed.

Might relate to MC-140727.
Can confirm in 1.17.
Can confirm in 1.17.1. Here are the provided seed & coordinates of where this issue can be seen.
Seed: 2686092101085001154
Coordinates: /execute in minecraft:overworld run tp @s 84.85 63.00 115.37 142.50 37.33

Can confirm in 1.21
Seed 3177711811009956476
World type: Default
XZ: Overworld -1342 1097
Screenshot:
Can confirm on 1.17 Release Candidate 1 with slightly different coordinates. Clones MC-113898.