Ubuntu 16.04, JDK9 b154
> FAIL: window.history.length == originalHistoryLength + 1 should be true but instead is false.
> FAIL: window.history.length == originalHistoryLength + 2 should be true but instead is false.
> FAIL: window.history.length == originalHistoryLength + 2 should be true but instead is false.
> FAIL: window.history.length == originalHistoryLength + 1 should be true but instead is false.
> FAIL: window.history.length == originalHistoryLength + 2 should be true but instead is false.
> FAIL: window.history.length == originalHistoryLength + 2 should be true but instead is false.