Ignoring a test in marionette, looks like the browser behavior has been changed.
import static org.junit.Assert.assertThat;
import static org.openqa.selenium.testing.Driver.CHROME;
import static org.openqa.selenium.testing.Driver.IE;
+import static org.openqa.selenium.testing.Driver.MARIONETTE;
import static org.openqa.selenium.testing.Driver.PHANTOMJS;
import static org.openqa.selenium.testing.Driver.SAFARI;
import static org.openqa.selenium.testing.TestUtilities.catchThrowable;
@@ -53,6 +54,7 @@ public void testShouldBeAbleToLoadASimplePageOfText() {
@Ignore(value = SAFARI, reason = "creates DOM for displaying text pages")
@Ignore(CHROME)
@Ignore(PHANTOMJS)
+ @Ignore(MARIONETTE)
public void testShouldThrowExceptionWhenAddingCookieToAPageThatIsNotHtml() {
driver.get(textPage);
