[TestBug] Two RobotTests fail on Windows10

Following two RobotTest fail on Windows10
1. testMouseWheelNegativeAmount
2. testMouseWheelPositiveAmount

These system tests fail with following errors:

RobotTest > testMouseWheelNegativeAmount FAILED
    org.junit.ComparisonFailure: mouse wheel should be scrolled -5 vertical units by Robot ex
pected:<Scrolled -[5]> but was:<Scrolled -[16]>
        at org.junit.Assert.assertEquals(Assert.java:117)
        at test.robot.javafx.scene.RobotTest.testMouseWheel(RobotTest.java:625)
        at test.robot.javafx.scene.RobotTest.testMouseWheelNegativeAmount(RobotTest.java:577)

RobotTest > testMouseWheelPositiveAmount FAILED
    org.junit.ComparisonFailure: mouse wheel should be scrolled 5 vertical units by Robot exp
ected:<Scrolled [5]> but was:<Scrolled [16]>
        at org.junit.Assert.assertEquals(Assert.java:117)
        at test.robot.javafx.scene.RobotTest.testMouseWheel(RobotTest.java:625)
        at test.robot.javafx.scene.RobotTest.testMouseWheelPositiveAmount(RobotTest.java:572)