FULL PRODUCT VERSION :
java version "9"
Java(TM) SE Runtime Environment (build 9+180)
Java HotSpot(TM) Server VM (build 9+180, mixed mode)

ADDITIONAL OS VERSION INFORMATION :
Linux aklinux 3.13.0-37-generic #64-Ubuntu SMP Mon Sep 22 21:30:01 UTC 2014 i686 i686 i686 GNU/Linux
Linux Min 17.1

A DESCRIPTION OF THE PROBLEM :
Multiple icons of the metal L&F and our application are identical. For example minimize, maximize and close window icon. A screenshot can visualize it.

On every run there are other icons involved.

This problem occur only with images which are loaded at the same time/place. Like the window icons or the toolbar icons our application.

The problem is persistence if we resize a window or new opening a dialog.

This sounds for us that it is not a problem of the graphic sub system. Else it seems to be a resource loading problem. After an initial loading such icons resources have a static reference.

REGRESSION. Last worked in version 8u152

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
We start the application with the follow jnlp:
<?xml version="1.0" encoding="utf-8"?>
<jnlp codebase="http://data:9000/jnlp/designer/">
<information os="Linux">
<title>i-net Designer</title>
<vendor>i-net software</vendor>
<icon href="../client/favicon.ico" />
</information>
<information os="Windows">
<title>i-net Designer</title>
<vendor>i-net software</vendor>
<icon href="../client/favicon.ico" />
</information>
<information os="Mac">
<title>i-net Designer</title>
<vendor>i-net software</vendor>
<icon href="../client/favicon.icns" />
</information>
<security>
<all-permissions/>
</security>
<resources>
<j2se version="1.8.*"/>
<j2se version="9.*" java-vm-args="--add-opens=java.base/java.net=ALL-UNNAMED --add-opens=java.base/java.security=ALL-UNNAMED --add-exports=java.base/sun.net.www.protocol.jar=ALL-UNNAMED --add-opens=java.desktop/sun.awt.shell=ALL-UNNAMED "/>
<jar href="JnlpDesigner.jar" main="true" download="eager"/>
<property name="jnlp.codebase" value="http://data:9000/jnlp/designer/"/>
</resources>
<application-desc main-class="com.inet.designer.jnlp.JnlpDesigner">
<argument>Cookie=SESSIONID9000=1b6yvap5gfpnx7wrylbbk043j</argument>
</application-desc>
</jnlp>

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
Different icons for different feature. or better the right icons on the right place.

REPRODUCIBILITY :
This bug can be reproduced often.