"Unspecified error Waiting for Edge operation to terminate timed out"

[jukzi]

Windows verification build failed on https://github.com/eclipse-platform/eclipse.platform/actions/runs/13118265699/job/36597841318?pr=1720

Error: Exception in thread "WorkbenchTestable" org.eclipse.swt.SWTException: Failed to execute runnable (org.eclipse.swt.SWTError: Unspecified error Waiting for Edge operation to terminate timed out)
	at org.eclipse.swt.SWT.error(SWT.java:4932)
	at org.eclipse.swt.SWT.error(SWT.java:4847)
	at org.eclipse.swt.widgets.Synchronizer.syncExec(Synchronizer.java:209)
	at org.eclipse.ui.internal.UISynchronizer.syncExec(UISynchronizer.java:133)
	at org.eclipse.swt.widgets.Display.syncExec(Display.java:4836)
	at org.eclipse.e4.ui.internal.workbench.swt.E4Testable.testingFinished(E4Testable.java:157)
	at org.eclipse.tycho.surefire.osgibooter.AbstractUITestApplication.runTests(AbstractUITestApplication.java:57)
	at org.eclipse.e4.ui.internal.workbench.swt.E4Testable.lambda$0(E4Testable.java:79)
	at java.base/java.lang.Thread.run(Thread.java:1583)
Caused by: org.eclipse.swt.SWTError: Unspecified error Waiting for Edge operation to terminate timed out
	at org.eclipse.swt.SWT.error(SWT.java:4957)
	at org.eclipse.swt.browser.Edge.processOSMessagesUntil(Edge.java:474)
	at org.eclipse.swt.browser.Edge$WebViewProvider.getWebViewWrapper(Edge.java:370)
	at org.eclipse.swt.browser.Edge$WebViewProvider.getWebView(Edge.java:381)
	at org.eclipse.swt.browser.Edge.getUrl(Edge.java:893)
	at org.eclipse.swt.browser.Browser.getUrl(Browser.java:771)
	at org.eclipse.ui.internal.intro.impl.presentations.BrowserIntroPartImplementation.saveCurrentPage(BrowserIntroPartImplementation.java:645)
	at org.eclipse.ui.internal.intro.impl.model.AbstractIntroPartImplementation.saveState(AbstractIntroPartImplementation.java:302)
	at org.eclipse.ui.internal.intro.impl.model.IntroPartPresentation.saveState(IntroPartPresentation.java:427)
	at org.eclipse.ui.intro.config.CustomizableIntroPart.saveState(CustomizableIntroPart.java:405)
	at org.eclipse.ui.internal.ViewIntroAdapterPart.saveState(ViewIntroAdapterPart.java:198)
	at org.eclipse.ui.internal.ViewReference.persist(ViewReference.java:60)
	at org.eclipse.ui.internal.e4.compatibility.CompatibilityView.persistState(CompatibilityView.java:226)
	at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
	at java.base/java.lang.reflect.Method.invoke(Method.java:580)
	at org.eclipse.e4.core.internal.di.MethodRequestor.execute(MethodRequestor.java:56)
	at org.eclipse.e4.core.internal.di.InjectorImpl.invokeUsingClass(InjectorImpl.java:299)
	at org.eclipse.e4.core.internal.di.InjectorImpl.invoke(InjectorImpl.java:227)
	at org.eclipse.e4.core.contexts.ContextInjectionFactory.invoke(ContextInjectionFactory.java:148)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeRemoveGui(PartRenderingEngine.java:925)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$4.run(PartRenderingEngine.java:857)
	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:47)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.removeGui(PartRenderingEngine.java:841)
	at org.eclipse.e4.ui.workbench.renderers.swt.ElementReferenceRenderer.disposeWidget(ElementReferenceRenderer.java:113)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeRemoveGui(PartRenderingEngine.java:934)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$4.run(PartRenderingEngine.java:857)
	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:47)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.removeGui(PartRenderingEngine.java:841)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeRemoveGui(PartRenderingEngine.java:896)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$4.run(PartRenderingEngine.java:857)
	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:47)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.removeGui(PartRenderingEngine.java:841)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeRemoveGui(PartRenderingEngine.java:896)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$4.run(PartRenderingEngine.java:857)
	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:47)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.removeGui(PartRenderingEngine.java:841)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeRemoveGui(PartRenderingEngine.java:896)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$4.run(PartRenderingEngine.java:857)
	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:47)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.removeGui(PartRenderingEngine.java:841)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.stop(PartRenderingEngine.java:1219)
	at org.eclipse.e4.ui.internal.workbench.E4Workbench.close(E4Workbench.java:190)
	at org.eclipse.e4.ui.internal.workbench.swt.E4Testable.lambda$3(E4Testable.java:157)
	at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:40)
	at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:132)
	at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:4077)
	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3693)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$5.run(PartRenderingEngine.java:1151)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:339)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1042)
	at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:153)
	at org.eclipse.ui.internal.Workbench.lambda$3(Workbench.java:668)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:339)
	at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:576)
	at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:173)
	at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:178)
	at org.eclipse.tycho.surefire.osgibooter.UITestApplication.runApplication(UITestApplication.java:34)
	at org.eclipse.tycho.surefire.osgibooter.AbstractUITestApplication.run(AbstractUITestApplication.java:129)
	at org.eclipse.tycho.surefire.osgibooter.UITestApplication.start(UITestApplication.java:44)
	at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:208)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:149)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:115)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:467)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:298)
	at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
	at java.base/java.lang.reflect.Method.invoke(Method.java:580)
	at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:668)
	at org.eclipse.equinox.launcher.Main.basicRun(Main.java:605)
	at org.eclipse.equinox.launcher.Main.run(Main.java:1481)
	at org.eclipse.equinox.launcher.Main.main(Main.java:1454)
Error: The operation was canceled.

[fedejeanne]

cc @HeikoKlare , @amartya4256

[HeikoKlare]

Related to: #1706

In CI runs (at least in GitHub Actions), we face Edge browser initialization randomly taking a long time. For SWT browser tests, the timeout value is currently increased, but for tests in Platform UI that create a browser it is obviously not.
I thought about trying to limit the timeout to GitHub Actions environments, but I intended to do that in the tests and not in productive code. But that would mean that we have to configure all tests that may use an Edge browser...
Let's see what we can do for the issue directly in SWT first.