Walls collisions doesnt works

ok, some mystic:

here is level01.qml

import QtQuick 2.0
import "entities"

Item {
    id: _root
    //anchors.fill: parent
    x: 0
    y: 0
    width: parent.width
    height: parent.height
    
    // these entities will be created when the game launches

    Wall {
        height: 1
        width: parent.width
        y: 0
        x: 0
        variationType: "ceil"
    }

    Wall {
        height: 1
        width: parent.width
        y: parent.height
        x: 0
        variationType: "floor"
    }
    
    Wall {
        width: 1
        height: _root.height
        x: 0
        y: 0
        boxColliderX: 1
        variationType: "left"
        onHeightChanged: console.log("level01 wall h:", height)
    }
    
    Wall {
        width: 1
        height: _root.height
        x: parent.width
        y: 0
        variationType: "right"
        boxColliderX: 1
    }

    Component.onCompleted: {
        entityManager.createPooledEntitiesFromUrl(Qt.resolvedUrl("entities/Corn.qml"))
    }
    onWidthChanged: console.log("leel01 w:", width)
    onHeightChanged: console.log("leel01 h:", height)
}

here is Wall.qml

import QtQuick 2.0
import Felgo 3.0
//import Box2D 1.0


EntityBase {
    id: entity
    entityType: "wall"
    collidersActive: true
    preventFromRemovalFromEntityManager: true
    property alias boxColliderX: boxCollider.x
    property alias boxColliderY: boxCollider.y

    BoxCollider {
        id: boxCollider
        categories: Box.Category1
        //collisionTestingOnlyMode: true
        // the wall shouldnt move
        bodyType: Body.Static
        anchors.fill: rect
    }

    
    Rectangle {
        id: rect
        color: "brown"
        anchors.fill: parent
    }
}

turning on debug draws in PhysicsWorld I’ve discovered that only one wall (variationType: “right”) gets correct size of parent.height/width

there rest elements gets something about 32 pixels

If I set numbers explicitly, everything works ok

can you explain this?