FULL PRODUCT VERSION :
java 1.8.0_45

ADDITIONAL OS VERSION INFORMATION :
Windows 7 x86

EXTRA RELEVANT SYSTEM CONFIGURATION :
Only fails to exit on Win 7 x86. It works properly on x64 versions.

A DESCRIPTION OF THE PROBLEM :
local Java jnlp program runs and closes correctly under Windows 7 x64
but the same program running local Java jnlp always fails to close when run on a computer running Windows 7 x86

problem starts with java 1.7.0_65 and continues with the latest versions of java 7 or 8

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
run the jnlp app and close it by clicking on the X in the upper right corner of the window.

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
jp2launcher.exe should have closed.
ACTUAL -
jp2launcher.exe continues to run

ERROR MESSAGES/STACK TRACES THAT OCCUR :
Plugin2Manager calling stopFailed() because of exception during AppContext.dispose()
Plugin2Manager calling stopFailed() because of displayable window javax.swing.JFrame[frame0,0,0,1040x558,hidden,layout=java.awt.BorderLayout,title=PCS Remote Display,normal,defaultCloseOperation=HIDE_ON_CLOSE,rootPane=javax.swing.JRootPane[,3,25,1034x530,layout=javax.swing.JRootPane$RootLayout,alignmentX=0.0,alignmentY=0.0,border=,flags=16777673,maximumSize=,minimumSize=,preferredSize=],rootPaneCheckingEnabled=true]
Exception in thread "Thread-16" java.lang.NullPointerException
at sun.plugin2.applet.Plugin2Manager.destroyAppContext(Unknown Source)
at sun.plugin2.applet.JNLP2Manager.destroyAppContext(Unknown Source)
at sun.plugin2.applet.Plugin2Manager.cleanupAppContext(Unknown Source)
at sun.plugin2.applet.Plugin2Manager.shutdownAppContext(Unknown Source)
at sun.plugin2.applet.Plugin2Manager.stop(Unknown Source)
at sun.plugin2.applet.viewer.JNLP2Viewer$2$1.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)


REPRODUCIBILITY :
This bug can be reproduced always.

CUSTOMER SUBMITTED WORKAROUND :
none. run the app only on x64 operating system