The test.javafx.scene.web.LeakTest.testGarbageCollectability unit test is failing intermittently. See JDK-8234540.

This test should be marked as unstable until JDK-8234540 can be fixed. This can be done by adding the following as the first line of the test method:

    assumeTrue(Boolean.getBoolean("unstable.test")); // JDK-8234540