src/java.desktop/unix/classes/sun/awt/X11/XToolkit.java

*** 282,293 ****
                  if (log.isLoggable(PlatformLogger.Level.FINE)) {
                      dumpPeers();
                  }
              };
              String name = "XToolkt-Shutdown-Thread";
!             Thread shutdownThread = new ManagedLocalsThread(
!                     ThreadGroupUtils.getRootThreadGroup(), r, name);
              shutdownThread.setContextClassLoader(null);
              Runtime.getRuntime().addShutdownHook(shutdownThread);
              return null;
          };
          AccessController.doPrivileged(a);
--- 282,293 ----
                  if (log.isLoggable(PlatformLogger.Level.FINE)) {
                      dumpPeers();
                  }
              };
              String name = "XToolkt-Shutdown-Thread";
!             Thread shutdownThread = new Thread(
!                     ThreadGroupUtils.getRootThreadGroup(), r, name, 0, false);
              shutdownThread.setContextClassLoader(null);
              Runtime.getRuntime().addShutdownHook(shutdownThread);
              return null;
          };
          AccessController.doPrivileged(a);
*** 330,341 ****
              init();
              XWM.init();
  
              toolkitThread = AccessController.doPrivileged((PrivilegedAction<Thread>) () -> {
                  String name = "AWT-XAWT";
!                 Thread thread = new ManagedLocalsThread(
!                         ThreadGroupUtils.getRootThreadGroup(), this, name);
                  thread.setContextClassLoader(null);
                  thread.setPriority(Thread.NORM_PRIORITY + 1);
                  thread.setDaemon(true);
                  return thread;
              });
--- 330,342 ----
              init();
              XWM.init();
  
              toolkitThread = AccessController.doPrivileged((PrivilegedAction<Thread>) () -> {
                  String name = "AWT-XAWT";
!                 Thread thread = new Thread(
!                         ThreadGroupUtils.getRootThreadGroup(), this, name,
!                         0, false);
                  thread.setContextClassLoader(null);
                  thread.setPriority(Thread.NORM_PRIORITY + 1);
                  thread.setDaemon(true);
                  return thread;
              });