src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/runtime/Context.java

@@ -346,11 +346,11 @@
         @Override
         public Class<?> install(final String className, final byte[] bytecode) {
             try {
                 ANONYMOUS_INSTALLED_SCRIPT_COUNT.increment();
                 // Workaround: define it as a hidden nestmate so that the hostLookup can find private members
-                return hostLookup.defineHiddenClass(bytecode, true, ClassOption.NESTMATE, ClassOption.WEAK).lookupClass();
+                return hostLookup.defineHiddenClass(bytecode, true, ClassOption.NESTMATE).lookupClass();
             } catch (IllegalAccessException e) {
                 throw new InternalError(e);
             }
         }