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

*** 1,7 ****
  /*
!  * Copyright (c) 2003, 2018, Oracle and/or its affiliates. All rights reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.  Oracle designates this
--- 1,7 ----
  /*
!  * Copyright (c) 2003, 2019, Oracle and/or its affiliates. All rights reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.  Oracle designates this
*** 547,556 ****
--- 547,562 ----
                              return true;
                          }
                      } finally {
                          state_getter.dispose();
                      }
+                     XQueryTree qt = new XQueryTree(wmwin);
+                     try {
+                         if (qt.execute() > 0) return true;
+                     } finally {
+                         qt.dispose();
+                     }
                  }
              }
          } finally {
              getter.dispose();
          }