The following failure was spotted one time in our nightly headful test run on an M2 running macOS 14:

CheckWindowOrderTest > topWindowShouldBeTheLast() FAILED
    org.opentest4j.AssertionFailedError: Last Window Should be Focused ==> expected: <true> but was: <false>
        at app//org.junit.jupiter.api.AssertionUtils.fail(AssertionUtils.java:55)
        at app//org.junit.jupiter.api.AssertTrue.assertTrue(AssertTrue.java:40)
        at app//org.junit.jupiter.api.Assertions.assertTrue(Assertions.java:210)
        at app//test.robot.javafx.stage.CheckWindowOrderTest.topWindowShouldBeTheLast(CheckWindowOrderTest.java:57)