Terracotta Block Model Bug

[creatorLabs]

There seems to be an issue with terracotta block models in 1.13.2-forge-25.0.141. I am a resourcepack creator and a user of my resourcepack has reported, that the terracotta textures are missing...

I tried to reproduce the issue in vanilla, but there it works fine...

Resourcepack in Vanilla:

https://i.imgur.com/8Ot9Pq3.png

Resourcepack using Forge:

https://i.imgur.com/Tu02ov5.png

I tried to find an issue in my .json files, but everything seems to be correct... 

Here is the blockstate file for yellow terracotta:

{
	"__comment": "Designed by CreatorLabs with Cubik Studio - https://cubik.studio - Download 3D CreatorCraft at https://www.planetminecraft.com/texture_pack/3d-creatorcraft/",
    "variants": {
        "": [	 
		{"model": "block/clay/stained_clay/colored/yellow", "y": 90 },
        {"model": "block/clay/stained_clay/colored/yellow", "y": 180},
        {"model": "block/clay/stained_clay/colored/yellow", "y": 270 },	
        {"model": "block/clay/stained_clay/colored/yellow"}		   
		]
		}
    }
}

The model file looks like this:

{
	"__comment": "Designed by CreatorLabs with Cubik Studio - https://cubik.studio - Download 3D CreatorCraft at https://www.planetminecraft.com/texture_pack/3d-creatorcraft/",
	"parent": "block/clay/clay",
	"textures": {
		"texture": "creatorlabs/clay/stained_clay/colored/yellow"
	}
}

And the parent "clay" is here:

{
	"__comment": "Designed by CreatorLabs with Cubik Studio - https://cubik.studio - Download 3D CreatorCraft at https://www.planetminecraft.com/texture_pack/3d-creatorcraft/",
	"parent": "block/block",
	"textures": {
		"particle": "#texture",
		"texture": "#texture"
	},
	"elements": [ 	 
		{
			"__comment": "main",
			"from": [ 0, 0, 0 ],
			"to": [ 16, 16, 16 ],
			"faces": {
				"down": { "uv": [ 0, 0, 16, 16 ], "texture": "#texture", "cullface": "down" },
				"up": { "uv": [ 0, 0, 16, 16 ], "texture": "#texture", "cullface": "up" },
				"north": { "uv": [ 0, 0, 16, 16 ], "texture": "#texture", "cullface": "north" },
				"south": { "uv": [ 0, 0, 16, 16 ], "texture": "#texture", "cullface": "south" },
				"west": { "uv": [ 0, 0, 16, 16 ], "texture": "#texture", "cullface": "west" },
				"east": { "uv": [ 0, 0, 16, 16 ], "texture": "#texture", "cullface": "east" }
			}
		}
	]
}

 

Since the item models are loaded correctly in both versions of the game (which can be also seen in the hotbar in the screenshots), there can be no issue with the models and paths. So there has to be an issue with the block loading in Forge...

[creatorLabs]

Here is my resourcepack: https://minecraft.curseforge.com/projects/d-creatorcraft/files/2631128/download