--- old/src/java.desktop/macosx/native/libawt_lwawt/awt/AWTWindow.m	2017-11-07 15:21:31.000000000 +0530
+++ new/src/java.desktop/macosx/native/libawt_lwawt/awt/AWTWindow.m	2017-11-07 15:21:31.000000000 +0530
@@ -955,7 +955,9 @@
 }
 
 - (BOOL)windowShouldZoom:(NSWindow *)window toFrame:(NSRect)newFrame {
-    return !NSEqualSizes(self.nsWindow.frame.size, newFrame.size);
+    // If window is not in zoomed stated, zoom it
+    // by returning true, else no need to zoom it again!
+    return ![self.nsWindow isZoomed];
 }