使用 JComboBox 时遇到 java.awt.IllegalComponent 异常

我在 Frame 中添加了一个 JComboBox ，运行之后切换下拉菜单中的选项，每切换一次都会报异常：

java.awt.IllegalComponentStateException: component must be showing on the screen to determine its location
	at java.awt.Component.getLocationOnScreen_NoTreeLock(Component.java:2062)
	at java.awt.Component.getLocationOnScreen(Component.java:2036)
	at sun.lwawt.macosx.CAccessibility$23.call(CAccessibility.java:418)
	at sun.lwawt.macosx.CAccessibility$23.call(CAccessibility.java:416)
	at sun.lwawt.macosx.LWCToolkit$CallableWrapper.run(LWCToolkit.java:597)
	at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:301)
	at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:758)
	at java.awt.EventQueue.access$500(EventQueue.java:97)
	at java.awt.EventQueue$3.run(EventQueue.java:709)
	at java.awt.EventQueue$3.run(EventQueue.java:703)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:74)
	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:84)
	at java.awt.EventQueue$4.run(EventQueue.java:733)
	at java.awt.EventQueue$4.run(EventQueue.java:731)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:74)
	at java.awt.EventQueue.dispatchEvent(EventQueue.java:730)
	at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:205)
	at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
	at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)

折腾了许多方法，都无法解决问题。最后将原来的 JDK8 升级到 JDK21，这个异常就不会出现了，所以这可能是 JDK8 自身的 bug。