Incomplete and inconsistent type checking for QML lists

Code

import QtQuick

Window {
    id: root
    width: 800
    height: 600
    visible: true

    Item { id: rawItem }
    QtObject { id: rawObj }

    property int number: Qt.point(100, 100) // Compiler warning (Expected)
    property list<Item> itemList: [
        rawItem,
        rawObj // No compiler warning (NOT expected)
    ]

    function testAssignment() {
        root.itemList[0] = rawItem
        root.itemList[1] = rawObj // Compiler warning (Expected)
    }

    function printList() {
        for (let i = 0; i < root.itemList.length; ++i)
            console.log(root.itemList[i])
    }

    Component.onCompleted: {
        console.log("# Before imperative assignment")
        root.printList() // Null 2nd item (Expected)

        root.testAssignment()

        console.log("# After imperative assignment")
        root.printList() // Non-null 2nd item (NOT expected)
    }
}

Outcomes

• Initialization of `root.number` produces a qmlsc warning (Expected)

  Warning: Main.qml:12:23: Cannot assign binding of type QPointF to int [incompatible-type]
      property int number: Qt.point(100, 100) // Compiler warning (Expected)
                           ^^^^^^^^^^^^^^^^^^
  

• Initialization of `root.itemList` does not produce a qmlsc warning (Not expected)

• function testAssignment() produces a qmlsc warning (Expected, although the warning cursor is a bit off)

  Warning: Main.qml:21:2: Could not compile function testAssignment: Cannot convert from  to QQuickItem [compiler]
      }
      ^
  

• printList() produces different results at runtime (Not expected - Both calls should print the same thing):

  qml: # Before imperative assignment
  qml: QQuickItem(0x158c6ed33a0)
  qml: null
  qml: # After imperative assignment
  qml: QQuickItem(0x158c6ed33a0)
  qml: QObject(0x158c50ce1f0)