Tint index not applying to certain model parts in 26.1

The 26.1 change to allow transparent textures has seemingly broken the tint index applying to desired block model parts. In the screenshot example, the protruding parts of my oak leaves model are not color green, despite the model applying tint index to those parts. This is not an issue in 1.21.11.

Oak leaves model:

{
"parent": "block/block",
"texture_size": [64, 64],
"textures": {
"particle": "#all"
},
"elements": [
{
"from": [0, 0, 0],
"to": [16, 16, 16],
"faces": {
"north": {"uv": [0, 0, 4, 4], "texture": "#all", "cullface": "north", "tintindex": 0},
"east": {"uv": [0, 0, 4, 4], "texture": "#all", "cullface": "east", "tintindex": 0},
"south": {"uv": [0, 0, 4, 4], "texture": "#all", "cullface": "south", "tintindex": 0},
"west": {"uv": [0, 0, 4, 4], "texture": "#all", "cullface": "west", "tintindex": 0},
"up": {"uv": [0, 0, 4, 4], "texture": "#all", "cullface": "up", "tintindex": 0},
"down": {"uv": [0, 0, 4, 4], "texture": "#all", "cullface": "down", "tintindex": 0}
}
},
{
"name": "top",
"from": [0.25, 16, -3.75],
"to": [0.25, 23, 26.25],
"shade": false,
"rotation": {"angle": 45, "axis": "y", "origin": [0.25, 14, 0.25]},
"faces": {
"east": {"uv": [7.75, 8.25, 0.25, 10], "texture": "#all", "cullface": "up", "tintindex": 1},
"west": {"uv": [0.25, 8.25, 7.75, 10], "texture": "#all", "cullface": "up", "tintindex": 1}
}
},
{
"name": "top",
"from": [10.15, 16, -6.15],
"to": [10.15, 23, 23.85],
"shade": false,
"rotation": {"angle": -45, "axis": "y", "origin": [10.15, 14, 5.85]},
"faces": {
"east": {"uv": [7.75, 8.25, 0.25, 10], "texture": "#all", "cullface": "up", "tintindex": 1},
"west": {"uv": [0.25, 8.25, 7.75, 10], "texture": "#all", "cullface": "up", "tintindex": 1}
}
},
{
"name": "down",
"from": [0.25, -7, -3.75],
"to": [0.25, 0, 26.25],
"shade": false,
"rotation": {"angle": 45, "axis": "y", "origin": [0.25, 14, 0.25]},
"faces": {
"east": {"uv": [7.75, 14, 0.25, 15.75], "texture": "#all", "cullface": "down", "tintindex": 1},
"west": {"uv": [0.25, 14, 7.75, 15.75], "texture": "#all", "cullface": "down", "tintindex": 1}
}
},
{
"name": "down",
"from": [10.15, -7, -6.15],
"to": [10.15, 0, 23.85],
"shade": false,
"rotation": {"angle": -45, "axis": "y", "origin": [10.15, 14, 5.85]},
"faces": {
"east": {"uv": [7.75, 14, 0.25, 15.75], "texture": "#all", "cullface": "down", "tintindex": 1},
"west": {"uv": [0.25, 14, 7.75, 15.75], "texture": "#all", "cullface": "down", "tintindex": 1}
}
},
{
"name": "side",
"from": [0.25, 0, 22.25],
"to": [0.25, 16, 26.25],
"shade": false,
"rotation": {"angle": 45, "axis": "y", "origin": [0.25, 14, 0.25]},
"faces": {
"east": {"uv": [7.75, 10, 6.75, 14], "texture": "#all", "tintindex": 1},
"west": {"uv": [6.75, 10, 7.75, 14], "texture": "#all", "tintindex": 1}
}
},
{
"name": "side",
"from": [0.25, 0, -3.75],
"to": [0.25, 16, 0.25],
"shade": false,
"rotation": {"angle": 45, "axis": "y", "origin": [0.25, 14, 0.25]},
"faces": {
"east": {"uv": [1.25, 10, 0.25, 14], "texture": "#all", "tintindex": 1},
"west": {"uv": [0.25, 10, 1.25, 14], "texture": "#all", "tintindex": 1}
}
},
{
"name": "side",
"from": [10.15, 0, 19.85],
"to": [10.15, 16, 23.85],
"shade": false,
"rotation": {"angle": -45, "axis": "y", "origin": [10.15, 14, 5.85]},
"faces": {
"east": {"uv": [7.75, 10, 6.75, 14], "texture": "#all", "tintindex": 1},
"west": {"uv": [6.75, 10, 7.75, 14], "texture": "#all", "tintindex": 1}
}
},
{
"name": "side",
"from": [10.15, 0, -6.15],
"to": [10.15, 16, -2.15],
"shade": false,
"rotation": {"angle": -45, "axis": "y", "origin": [10.15, 14, 5.85]},
"faces": {
"east": {"uv": [1.25, 10, 0.25, 14], "texture": "#all", "tintindex": 1},
"west": {"uv": [0.25, 10, 1.25, 14], "texture": "#all", "tintindex": 1}
}
},
{
"name": "awning",
"from": [0, 11.35, -3.15],
"to": [16, 11.35, 4.85],
"shade": false,
"rotation": {"angle": -22.5, "axis": "x", "origin": [0, 0.5, 1.85]},
"faces": {
"up": {"uv": [2, 8.25, 6, 10.25], "texture": "#all", "cullface": "north", "tintindex": 1},
"down": {"uv": [6, 8.25, 2, 10.25], "rotation": 180, "texture": "#all", "cullface": "north", "tintindex": 1}
}
},
{
"name": "awning",
"from": [12.4, 17.6, 0],
"to": [20.4, 17.6, 16],
"shade": false,
"rotation": {"angle": -22.5, "axis": "z", "origin": [-0.9, 6.75, 0]},
"faces": {
"up": {"uv": [5.75, 10, 7.75, 14], "texture": "#all", "cullface": "east", "tintindex": 1},
"down": {"uv": [7.75, 10, 5.75, 14], "rotation": 180, "texture": "#all", "cullface": "east", "tintindex": 1}
}
},
{
"name": "awning",
"from": [0, 14.45, 11.7],
"to": [16, 14.45, 19.7],
"shade": false,
"rotation": {"angle": 22.5, "axis": "x", "origin": [0, 3.35, 6.65]},
"faces": {
"up": {"uv": [2, 13.75, 6, 15.75], "texture": "#all", "cullface": "south", "tintindex": 1},
"down": {"uv": [6, 13.75, 2, 15.75], "rotation": 180, "texture": "#all", "cullface": "south", "tintindex": 1}
}
},
{
"name": "awning",
"from": [-2.6, 8.2, 0],
"to": [5.4, 8.2, 16],
"shade": false,
"rotation": {"angle": 22.5, "axis": "z", "origin": [-5.9, -2.65, 0]},
"faces": {
"up": {"uv": [0.25, 10, 2.25, 14], "texture": "#all", "cullface": "west", "tintindex": 1},
"down": {"uv": [2.25, 10, 0.25, 14], "rotation": 180, "texture": "#all", "cullface": "west", "tintindex": 1}
}
}
]
}