JBR-5189 Can't exit fullscreen mode on ubuntu 22.10

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

@@ -343,7 +343,8 @@ public void handlePropertyNotify(XEvent xev) {
             if (XWM.getWMID() != XWM.UNITY_COMPIZ_WM) {
                 wm_set_insets = null;
                 Insets in = getWMSetInsets(XAtom.get(ev.get_atom()));
-                if (isReparented() && in != null && !in.equals(dimensions.getInsets())) {
+                if (isReparented() && (!isMapped() || getMWMDecorTitleProperty().isPresent()) &&
+                        in != null && !in.equals(dimensions.getInsets())) {
                     handleCorrectInsets(in);
                 }
             } else {

test/jdk/jb/java/awt/Window/RestoreFromFullScreen.java

@@ -0,0 +1,71 @@
+/*
+ * Copyright 2023 JetBrains s.r.o.
+ * 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.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+import java.awt.*;
+import javax.swing.*;
+
+/**
+ * @test
+ * @summary Regression test for JBR-5189 Can't exit fullscreen mode on ubuntu 22.10
+ * @key headful
+ */
+
+public class RestoreFromFullScreen {
+    private static final int INITIAL_WIDTH = 400;
+    private static final int INITIAL_HEIGHT = 300;
+
+    private static JFrame frame;
+
+    public static void main(String[] args) throws Exception {
+        try {
+            SwingUtilities.invokeAndWait(RestoreFromFullScreen::initUI);
+            Thread.sleep(1000);
+            SwingUtilities.invokeAndWait(() -> frame.getGraphicsConfiguration().getDevice().setFullScreenWindow(frame));
+            Thread.sleep(1000);
+            SwingUtilities.invokeAndWait(() -> {
+                if (frame.getWidth() <= INITIAL_WIDTH || frame.getHeight() <= INITIAL_HEIGHT) {
+                    throw new RuntimeException("Full screen transition hasn't happened");
+                }
+                frame.getGraphicsConfiguration().getDevice().setFullScreenWindow(null);
+            });
+            Thread.sleep(1000);
+            SwingUtilities.invokeAndWait(() -> {
+                if (frame.getWidth() != INITIAL_WIDTH || frame.getHeight() != INITIAL_HEIGHT) {
+                    throw new RuntimeException("Restoring of the original size hasn't happened");
+                }
+            });
+        } finally {
+            SwingUtilities.invokeAndWait(RestoreFromFullScreen::disposeUI);
+        }
+    }
+
+    private static void initUI() {
+        frame = new JFrame("RestoreFromFullScreen");
+        frame.setBounds(200, 200, INITIAL_WIDTH, INITIAL_HEIGHT);
+        frame.setVisible(true);
+    }
+
+    private static void disposeUI() {
+        if (frame != null) frame.dispose();
+    }
+}