An error dialog still show when preloader has already implements handleErrorNotification and returned true

Launch the fx applet. http://rehte.cn.oracle.com:8080/wshost/new_ws/deployment/src/javafx/fxfeaturesTest/fxfeaturesTest/html/MissingJarHandleError.html
the jnlp file has a jar file which actually doesn't exist
The preloader's method handleErrorNotification should be invoked, if the default error dialog still shows up, bug is reproduced.