I've noticed an intermittent failure in the new TextTest.testTabSize unit test on couple of our automated test runs. Here is the most recent one:

test.javafx.scene.text.TextTest > testTabSize FAILED
    java.lang.AssertionError:
        at org.junit.Assert.fail(Assert.java:91)
        at org.junit.Assert.assertTrue(Assert.java:43)
        at org.junit.Assert.assertTrue(Assert.java:54)
        at test.javafx.scene.text.TextTest.testTabSize(TextTest.java:260)

This may be due to the some expectation that the test has about the state of the FX runtime or some test not leaving the state of the FX runtime the way it found it. Since all tests of all test classes in the graphics project run in the same JVM and run in an unpredictable order, this sort of intermittent failure is possible.