InitialSizeTest fails on my old Ubuntu 16.04 system about 1/4 of the time.

test.javafx.stage.InitialSizeTest > testInitialSize FAILED
    java.lang.AssertionError: Stage height expected:<200.0> but was:<199.0>
        at org.junit.Assert.fail(Assert.java:91)
        at org.junit.Assert.failNotEquals(Assert.java:645)
        at org.junit.Assert.assertEquals(Assert.java:441)
        at test.javafx.stage.InitialSizeTest.testInitialSize(InitialSizeTest.java:79)