Index: /trunk/src/org/openstreetmap/josm/tools/PlatformHookOsx.java
===================================================================
--- /trunk/src/org/openstreetmap/josm/tools/PlatformHookOsx.java	(revision 12696)
+++ /trunk/src/org/openstreetmap/josm/tools/PlatformHookOsx.java	(revision 12697)
@@ -29,6 +29,4 @@
 public class PlatformHookOsx implements PlatformHook, InvocationHandler {
 
-    private static final PlatformHookOsx INVOCATION_HANDLER = new PlatformHookOsx();
-
     private String oSBuildNumber;
 
@@ -59,5 +57,5 @@
             Class<?> preferencesHandler = findHandlerClass("PreferencesHandler");
             Object proxy = Proxy.newProxyInstance(PlatformHookOsx.class.getClassLoader(), new Class<?>[] {
-                quitHandler, aboutHandler, openFilesHandler, preferencesHandler}, INVOCATION_HANDLER);
+                quitHandler, aboutHandler, openFilesHandler, preferencesHandler}, this);
             Object appli = eawtApplication.getConstructor((Class[]) null).newInstance((Object[]) null);
             if (Utils.getJavaVersion() >= 9) {