The blocks surrounding trial spawners can be replaced by others as observed in the screenshot below.
Used seed: -8059620971163738172
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Can confirm, relates to MC-268577.
The tuff around the trial spawner is supposed to be stone.
Trial chambers generation has been changed in 1.21.0.23, and again in 1.21.0.24, thus this can no longer be reproduced with the given seed and coordinates. I found this in 1.21.0.24, where one of the stone is replaced by a diamond ore.
Seed: -2435487164520413695
Coordinates: -1460 -21 315
Can confirm, relates to MC-268577.
The tuff around the trial spawner is supposed to be stone.
Trial chambers generation has been changed in 1.21.0.23, and again in 1.21.0.24, thus this can no longer be reproduced with the given seed and coordinates. I found this in 1.21.0.24, where one of the stone is replaced by a diamond ore.
Seed: -2435487164520413695
Coordinates: -1460 -21 315
Thank you for your report!
After consideration, the issue is being closed as Working as Intended.
Please note, that mechanics of the game may change between updates.
Things such as graphics, sounds, world creation, biomes, redstone, villagers, and animals may not work the same in current versions.
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