[wasm] DropShadow breaks keyboard input

import QtQuick
import QtQuick.Controls
import Qt5Compat.GraphicalEffects

Window {
    width: 640
    height: 480
    visible: true
    title: qsTr("Hello World")

    TextField {
        placeholderText: "Give me some input!"
    }

    Rectangle {
        id: rect
        x: 50
        y: 50
        width: 50
        height: 50
        color: "green"
    }

    DropShadow {
        anchors.fill: rect
        horizontalOffset: 3
        verticalOffset: 3
        radius: 8.0
        color: "#80000000"
        source: rect
        spread: 0
    }
}