When there is the hierarchy

Control (or any of its subclasses from QtQuickControls2)

a layout (ColumknLayout, RowLayout or GridLayout)

and Text (or Label from QtQuickControls2)

Item {
    width: 300
    implicitHeight: layout.implicitHeight

    ColumnLayout {
        id: layout
        anchors.fill:parent
        Text {
            Layout.fillWidth: true
            text: "Lorem ipsum dolor sit amet, consectetur adipiscing elit. Aliquam purus lacus, cursus id fermentum vel"
            wrapMode: Text.WordWrap
        }
    }
}

we have a binding loop on implicitHeight if the Control has a fixed width and height not set (default)

This is a very common case in listviews, where one can have a Delegate as ListView delegate and a layout with various labels inside to show the model data, leading to views with visible layout problems.