[BUG] Geodes (and possibly other features) don't spawn in other dimensions

[Martmists-GH]

Describe the bug
We use a custom dimension with frequent resets to allow players to get resources, but the Spectrum geodes don't seem to spawn at all. However, it copies the generator settings from minecraft:overworld, so I'd expect it to spawn.

To Reproduce

// dimension_type/outer_world.json
{
  "ultrawarm": false,
  "natural": true,
  "piglin_safe": false,
  "respawn_anchor_works": false,
  "bed_works": false,
  "has_raids": true,
  "has_skylight": true,
  "has_ceiling": false,
  "coordinate_scale": 1,
  "ambient_light": 0,
  "logical_height": 256,
  "effects": "minecraft:overworld",
  "infiniburn": "#minecraft:infiniburn_overworld",
  "min_y": -64,
  "height": 416,
  "monster_spawn_light_level": 0,
  "monster_spawn_block_light_limit": 0
}
// dimension/outer_world.json
{
  "type": "next_overworld:outer_world",
  "generator": {
    "type": "minecraft:noise",
    "settings": "minecraft:overworld",
    "biome_source": {
      "type": "minecraft:multi_noise",
      "preset": "minecraft:overworld"
    }
  }
}

Expected behavior
The geodes spawn as normal

Minecraft version
1.20.1

Mod version
1.8.4

[Martmists-GH]

Also, since this dimension has increased height, shimmerstone rarely ever seems to spawn, if at all.

[DaFuqs]

The geodes and other placed features are added to all overworld biomes using fabrics default biome modification mechanism to all biomes with the tag c:in_overworld, so theoretically, as long as the biome is in that tag the features should generate fine.

Do these dimensions generate other mods features properly?