Minecart won't move uphill when max_speed is greater than ~0.5

{
    "minecraft:entity": {
        "format_version": "1.2.0",
        "components": {
            "minecraft:identifier": {
                "id": "minecraft:minecart"
            },
            "minecraft:nameable": {},
            "minecraft:is_stackable": {},
            "minecraft:type_family": {
                "family": [
                    "minecart"
                ]
            },
            "minecraft:collision_box": {
                "width": 0.98,
                "height": 0.7
            },
            "minecraft:rail_movement": {
                "max_speed": 1.0
            },
            "minecraft:rideable": {
                "seat_count": 1,
                "interact_text": "action.interact.ride.minecart",
                "pull_in_entities": true,
                "family_types": [
                    "coaster"
                ],
                "seats": [
                    {
                        "position": [
                            0,
                            5.1,
                            0
                        ],
                        "rotate_rider_by": 0
                    }
                ]
            },
            "minecraft:damage_sensor": {
                "deals_damage": false
            },
            "minecraft:rail_sensor": {
                "eject_on_activate": true
            },
            "minecraft:physics": {}
        }
    }
}