private boolean isMaximizedBoundsFixed() {
		return SystemInfo.isJava_15_orLater ||
			(SystemInfo.javaVersion >= SystemInfo.toVersion( 11, 0, 8, 0 ) &&
			 SystemInfo.javaVersion <  SystemInfo.toVersion( 12, 0, 0, 0 )) ||
			(SystemInfo.javaVersion >= SystemInfo.toVersion( 13, 0, 4, 0 ) &&
			 SystemInfo.javaVersion <  SystemInfo.toVersion( 14, 0, 0, 0 ));
	}
Frame.setMaximizedBounds() behaves different on some Java versions after issues
  https://bugs.openjdk.java.net/browse/JDK-8231564 and
  https://bugs.openjdk.java.net/browse/JDK-8176359
  (see also https://bugs.java.com/bugdatabase/view_bug.do?bug_id=8176359)
were fixed in Java 15 and backported to 11.0.8 and 13.0.4.
flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatTitlePane.java