Exception while closing window

[amitjoy]

I have built OSGi.fx using e(fx)clipse. However, while I am closing the window, I see tons of the same following exception:

2026-02-13  00:29:01.142+01:00     ERROR     [Equinox Log Thread - Equinox Container: f997385f-fa4e-44b4-a84a-b9241e0ab7c3]  [Events.Framework.org.eclipse.e4.ui.workbench]  FrameworkEvent ERROR (java.lang.NullPointerException: Cannot invoke "org.eclipse.fx.core.ThreadSynchronize.asyncExec(java.lang.Runnable)" because "this.threadSynchronize" is null)
java.lang.NullPointerException: Cannot invoke "org.eclipse.fx.core.ThreadSynchronize.asyncExec(java.lang.Runnable)" because "this.threadSynchronize" is null
	at org.eclipse.fx.ui.workbench.fx.internal.UISynchronizeImpl.asyncExec(UISynchronizeImpl.java:58)
	at org.eclipse.e4.ui.internal.workbench.ModelAssembler$ModelFragmentBundleTracker.removedBundle(ModelAssembler.java:145)
	at org.eclipse.e4.ui.internal.workbench.ModelAssembler$ModelFragmentBundleTracker.removedBundle(ModelAssembler.java:1)
	at org.osgi.util.tracker.BundleTracker$Tracked.customizerRemoved(BundleTracker.java:503)
	at org.osgi.util.tracker.BundleTracker$Tracked.customizerRemoved(BundleTracker.java:1)
	at org.osgi.util.tracker.AbstractTracked.untrack(AbstractTracked.java:342)
	at org.osgi.util.tracker.BundleTracker$Tracked.bundleChanged(BundleTracker.java:458)
	at org.eclipse.osgi.internal.framework.BundleContextImpl.dispatchEvent(BundleContextImpl.java:987)
	at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:230)
	at org.eclipse.osgi.framework.eventmgr.ListenerQueue.dispatchEventSynchronous(ListenerQueue.java:151)
	at org.eclipse.osgi.internal.framework.EquinoxEventPublisher.publishBundleEventPrivileged(EquinoxEventPublisher.java:237)
	at org.eclipse.osgi.internal.framework.EquinoxEventPublisher.publishBundleEvent(EquinoxEventPublisher.java:136)
	at org.eclipse.osgi.internal.framework.EquinoxEventPublisher.publishBundleEvent(EquinoxEventPublisher.java:128)
	at org.eclipse.osgi.internal.framework.EquinoxContainerAdaptor.publishModuleEvent(EquinoxContainerAdaptor.java:232)
	at org.eclipse.osgi.container.Module.publishEvent(Module.java:534)
	at org.eclipse.osgi.container.Module.stop(Module.java:570)
	at org.eclipse.osgi.container.ModuleContainer$ContainerStartLevel.decStartLevel(ModuleContainer.java:2153)
	at org.eclipse.osgi.container.ModuleContainer$ContainerStartLevel.doContainerStartLevel(ModuleContainer.java:2022)
	at org.eclipse.osgi.container.SystemModule.stopWorker(SystemModule.java:281)
	at org.eclipse.osgi.internal.framework.EquinoxBundle$SystemBundle$EquinoxSystemModule.stopWorker(EquinoxBundle.java:225)
	at org.eclipse.osgi.container.Module.doStop(Module.java:699)
	at org.eclipse.osgi.container.Module.stop(Module.java:557)
	at org.eclipse.osgi.container.SystemModule.stop(SystemModule.java:212)
	at org.eclipse.osgi.internal.framework.EquinoxBundle$SystemBundle$EquinoxSystemModule$1.run(EquinoxBundle.java:244)
	at java.base/java.lang.Thread.run(Thread.java:1474)

It doesn't have any impact though, but I just thought of informing you about it.

[martinbluehweis]

looks like UISynchronizeImpl.unsetThreadSynchronize is called earlier while shutting down.