RichTextAreaTest.undoStyleChange test fails consistently, with below exception.

RichTextAreaTest > undoStyleChange() FAILED
    org.opentest4j.AssertionFailedError: expected: <false> but was: <true>
        at app//org.junit.jupiter.api.AssertionFailureBuilder.build(AssertionFailureBuilder.java:151)
        at app//org.junit.jupiter.api.AssertionFailureBuilder.buildAndThrow(AssertionFailureBuilder.java:132)
        at app//org.junit.jupiter.api.AssertFalse.failNotFalse(AssertFalse.java:63)
        at app//org.junit.jupiter.api.AssertFalse.assertFalse(AssertFalse.java:36)
        at app//org.junit.jupiter.api.AssertFalse.assertFalse(AssertFalse.java:31)
        at app//org.junit.jupiter.api.Assertions.assertFalse(Assertions.java:231)
        at app//test.jfx.incubator.scene.control.richtext.RichTextAreaTest.undoStyleChange(RichTextAreaTest.java:795)