Error with grass color in partial biome replacement

There’s a bug with custom biomes and grass coloring. When you use very saturated or intense grass colors, the side texture of the grass block doesn’t update to match the new color—it only changes if you use the grass color from Pale Garden. With any other color, the side stays the same and doesn’t update.

Here’s an example of the biome code:

Biome definition:

{ 

  "format_version": "1.21.100", 

  "minecraft:biome": { 

    "description": { 

      "identifier": "bioscape:deciduous_forest" 

    }, 

    "components": { 

      "minecraft:climate": { 

        "downfall": 0.8, 

        "snow_accumulation": [ 0.0, 0.125 ], 

        "temperature": 0.7 

      }, 

      "minecraft:overworld_height": { 

        "noise_params": [ -0.1, 0.3 ] 

      }, 

      "minecraft:humidity": { 

        "is_humid": true 

      }, 

      "minecraft:surface_builder": { 

        "builder": { 

          "type": "minecraft:overworld", 

          "sea_floor_depth": 7, 

          "sea_floor_material": "minecraft:gravel", 

          "foundation_material": "minecraft:stone", 

          "mid_material": "minecraft:dirt", 

          "top_material": "minecraft:grass_block", 

          "sea_material": "minecraft:water" 

        } 

      }, 

      "minecraft:replace_biomes": { 

        "replacements": [ 

          { 

            "dimension": "minecraft:overworld", 

            "targets": [ 

              "minecraft:forest",  

              "minecraft:forest_hills" 

            ], 

            "amount": 0.5, 

            "noise_frequency_scale": 0.1 

          } 

        ] 

      },  

      "minecraft:tags": { 

        "tags": [ 

          "deciduous_forest",  

          "animal", 

          "monster", 

          "overworld",  

          "caves",  

          "bioscape" 

        ] 

      } 

    } 

  } 

}

Client biome color override:

{ 

  "format_version": "1.21.70",

  "minecraft:client_biome": {

    "description": {

      "identifier": "bioscape:deciduous_forest"

    },

    "components": {

      "minecraft:foliage_appearance": {

        "color": "#7CC895"

      },

      "minecraft:grass_appearance": {

        "color": "#9EB2E1"

      }

    }

  }

}