NPE in Ensemble8

> [java] java.lang.RuntimeException: Exception in Application init method
> [java] at com.sun.javafx.application.LauncherImpl.launchApplication1(LauncherImpl.java:824)
> [java] at com.sun.javafx.application.LauncherImpl.access$000(LauncherImpl.java:56)
> [java] at com.sun.javafx.application.LauncherImpl$1.run(LauncherImpl.java:150)
> [java] at java.lang.Thread.run(Thread.java:722)
> [java] Caused by: java.lang.ExceptionInInitializerError
> [java] at ensemble.generated.Samples.<clinit>(Samples.java:6)
> [java] at ensemble.EnsembleApp.init(EnsembleApp.java:227)
> [java] at com.sun.javafx.application.LauncherImpl.launchApplication1(LauncherImpl.java:749)
> [java] ... 3 more
> [java] Caused by: java.lang.NullPointerException
> [java] at ensemble.SampleInfo.getImage(SampleInfo.java:347)
> [java] at ensemble.SampleInfo.<clinit>(SampleInfo.java:213)
> [java] ... 6 more

a known issue? It's clearly a bug: one static field (SAMPLE_BACKGROUND) is initialized using another one (imageCache), which is not created yet.