Collapsed Menus Can't Be Expanded

[IanKrL]

Apache NetBeans version

Apache NetBeans 25

What happened

When trying to view hidden toolbar items, nothing happens.

A stack trace is written to the log:

SEVERE [global]
java.lang.NullPointerException: Cannot invoke "java.awt.Component.getGraphicsConfiguration()" because "owner" is null
	at com.formdev.flatlaf.ui.FlatPopupFactory.getPopup(FlatPopupFactory.java:141)
	at java.desktop/javax.swing.plaf.PopupMenuUI.getPopup(PopupMenuUI.java:71)
	at com.formdev.flatlaf.ui.FlatPopupMenuUI.getPopup(FlatPopupMenuUI.java:216)
	at java.desktop/javax.swing.JPopupMenu.showPopup(JPopupMenu.java:872)
	at java.desktop/javax.swing.JPopupMenu.setVisible(JPopupMenu.java:820)
	at org.openide.awt.ToolbarWithOverflow.displayOverflow(ToolbarWithOverflow.java:317)
	at org.openide.awt.ToolbarWithOverflow.access$400(ToolbarWithOverflow.java:52)
	at org.openide.awt.ToolbarWithOverflow$3.mouseEntered(ToolbarWithOverflow.java:303)
	at java.desktop/java.awt.AWTEventMulticaster.mouseEntered(AWTEventMulticaster.java:308)
	at java.desktop/java.awt.AWTEventMulticaster.mouseEntered(AWTEventMulticaster.java:307)
	at java.desktop/java.awt.Component.processMouseEvent(Component.java:6630)
	at java.desktop/javax.swing.JComponent.processMouseEvent(JComponent.java:3398)
	at java.desktop/java.awt.Component.processEvent(Component.java:6386)
	at java.desktop/java.awt.Container.processEvent(Container.java:2266)
	at java.desktop/java.awt.Component.dispatchEventImpl(Component.java:4996)
	at java.desktop/java.awt.Container.dispatchEventImpl(Container.java:2324)
	at java.desktop/java.awt.Component.dispatchEvent(Component.java:4828)
	at java.desktop/java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4948)
	at java.desktop/java.awt.LightweightDispatcher.retargetMouseEnterExit(Container.java:4726)
	at java.desktop/java.awt.LightweightDispatcher.trackMouseEnterExit(Container.java:4704)
	at java.desktop/java.awt.LightweightDispatcher.processMouseEvent(Container.java:4555)
	at java.desktop/java.awt.LightweightDispatcher.dispatchEvent(Container.java:4516)
	at java.desktop/java.awt.Container.dispatchEventImpl(Container.java:2310)
	at java.desktop/java.awt.Window.dispatchEventImpl(Window.java:2780)
	at java.desktop/java.awt.Component.dispatchEvent(Component.java:4828)
	at java.desktop/java.awt.EventQueue.dispatchEventImpl(EventQueue.java:775)
	at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:720)
	at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:714)
	at java.base/java.security.AccessController.doPrivileged(AccessController.java:400)
	at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:87)
	at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:98)
	at java.desktop/java.awt.EventQueue$5.run(EventQueue.java:747)
	at java.desktop/java.awt.EventQueue$5.run(EventQueue.java:745)
	at java.base/java.security.AccessController.doPrivileged(AccessController.java:400)
	at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:87)
	at java.desktop/java.awt.EventQueue.dispatchEvent(EventQueue.java:744)
	at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:136)
[catch] at java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:203)
	at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:124)
	at java.desktop/java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:113)
	at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:109)
	at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
	at java.desktop/java.awt.EventDispatchThread.run(EventDispatchThread.java:90)

Language / Project Type / NetBeans Component

I'm using Java with Gradle (I also tested with a Maven Java project) but I think any project will be the same.

How to reproduce

Create a new Project (Any project will do)
Shrink the window horizontally until several toolbar icons are hidden and a dropdown button is displayed.
Click the dropdown button to see the hidden icons

Expected: Hidden Icons are Displayed
Actual: Nothing

Did this work correctly in an earlier version?

No / Don't know

Operating System

Windows (Appears to be Windows only, but no time to confirm for sure at the moment)

JDK

21.0.5

Apache NetBeans packaging

Apache NetBeans binary zip

Anything else

This appears to be a FlatLaf-related bug
Pretty sure this was first broken in NB 23 but I don't have time to verify that at the moment.

Are you willing to submit a pull request?

No

[DevCharly]

Will be fixed in FlatLaf 3.6 (coming in ~1 week): JFormDesigner/FlatLaf#952

[IanKrL]

Excellent. For some reason I hadn't checked the FlatLaf tickets yet. Thanks for linking it up.