Steps to reproduce:

1) Download jar files into a dir http://jfx.sfbay.sun.com/hudson/job/presidio-deploy-scrum/label=windows-i586-14/lastSuccessfulBuild/artifact/artifacts/deployed/SignedPreloader/fish.jar and http://jfx.sfbay.sun.com/hudson/job/presidio-deploy-scrum/label=windows-i586-14/lastSuccessfulBuild/artifact/artifacts/deployed/SignedPreloader/preloaders_signed.jar
2) Launch the app by: java -cp $JAVAFX_HOME/lib/jfxrt.jar;fish.jar;preloaders_signed.jar -Djavafx.preloader.class=preloaders.LoginPreloader -jar fish.jar
if the login preloader window and app window show up at the same time, bug is reproduced.

The applet http://jfx.sfbay.sun.com/hudson/job/presidio-deploy-scrum/label=windows-i586-14/lastSuccessfulBuild/artifact/artifacts/deployed/SignedPreloader/SignedPreloader.html and jnlp application http://jfx.sfbay.sun.com/hudson/job/presidio-deploy-scrum/label=windows-i586-14/lastSuccessfulBuild/artifact/artifacts/deployed/SignedPreloader/SignedPreloader.jnlp work well