Mixing TestCases with and without "when: windowShown" in one file skips TestCases or hangs

import QtQuick 2.5
import QtTest 1.1

Item {
    implicitWidth: 124
    implicitHeight: 116

    TestCase {
        name: "C"
        function test_3() {}
    }

    TestCase {
        name: "B"
        when: windowShown
        function test_2() {}
    }

    TestCase {
        name: "A"
        function test_1() {}
    }
}

PASS   : qmltestrunner::A::initTestCase()
PASS   : qmltestrunner::A::test_1()
PASS   : qmltestrunner::A::cleanupTestCase()
PASS   : qmltestrunner::C::initTestCase()
PASS   : qmltestrunner::C::test_3()
PASS   : qmltestrunner::C::cleanupTestCase()