modules/javafx.graphics/src/main/java/com/sun/javafx/tk/quantum/WindowStage.java

@@ -362,18 +362,20 @@
             px = xSet ? Math.round(screen.getPlatformX() + (x - sx) * sScaleX) : 0;
             py = ySet ? Math.round(screen.getPlatformY() + (y - sy) * sScaleY) : 0;
         } else {
             px = py = 0;
         }
+        if (xSet || ySet || w > 0 || h > 0 || cw > 0 || ch > 0) {
         int pw = (int) (w > 0 ? Math.ceil(w * pScaleX) : w);
         int ph = (int) (h > 0 ? Math.ceil(h * pScaleY) : h);
         int pcw = (int) (cw > 0 ? Math.ceil(cw * pScaleX) : cw);
         int pch = (int) (ch > 0 ? Math.ceil(ch * pScaleY) : ch);
         platformWindow.setBounds(px, py, xSet, ySet,
                                  pw, ph, pcw, pch,
                                  xGravity, yGravity);
     }
+    }
 
     @Override
     public float getPlatformScaleX() {
         return platformWindow.getPlatformScaleX();
     }