Material instance tint_method ignores alpha channel of texture.

Seems no matter what you do, the tint_method setting ignores the alpha channel of the texture, causing the wrong regions of it to be tinted.

Example code.

{
	"format_version": "1.19.80",
	"minecraft:block": {
		"description": {
			"identifier": "V1:grass_slab"
		},
		"components": {
			"minecraft:loot": "loot_tables/grass_slab.json",
			"minecraft:material_instances": {
				"bottom": {
					"texture": "grass_bottom",
					"render_method": "opaque"
				},
				"side": {
					"texture": "grass_slab_side",
					"render_method": "opaque",
					"tint_method": "grass"
				},
				"top": {
					"texture": "grass_top",
					"render_method": "opaque",
					"tint_method": "grass"
				}
			},
			"minecraft:geometry": "geometry.customslab",
			"minecraft:selection_box": {
				"size": [
					16,
					8,
					16
				],
				"origin": [
					-8,
					0,
					-8
				]
			},
			"minecraft:collision_box": {
				"size": [
					16,
					8,
					16
				],
				"origin": [
					-8,
					0,
					-8
				]
			}
		}
	}
}

Screenshot of what happens in attachments. As you can see, the dirt is tinted when it shouldn’t be.

The texture being used is the stock minecraft grass texture.

ie: "grass_slab_side": { "textures": [ "textures/blocks/grass_side" ] },