Bug 55799 [Intro] When new welcome is available, don't show the old one
One of the M8 candidate builds (any): 1) Open Eclipse on a new workspace 2) Close the new Welcome when it opens 3) Close Eclipse 4) Open Eclipse again. Observe: the old Welcome editor is opened. Expectation: when a product has a valid Intro, old welcome should never be shown.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/ide/WorkbenchActionBuilder.java
prevEditorAction.dispose();
		nextPerspectiveAction.dispose();
		prevPerspectiveAction.dispose();
		activateEditorAction.dispose();
		maximizePartAction.dispose();
		workbenchEditorsAction.dispose();
		backwardHistoryAction.dispose();
		forwardHistoryAction.dispose();
		undoAction.dispose();
		redoAction.dispose();
		cutAction.dispose();
		copyAction.dispose();
		pasteAction.dispose();
		deleteAction.dispose();
		selectAllAction.dispose();
		findAction.dispose();
		printAction.dispose();
		revertAction.dispose();
		refreshAction.dispose();
		propertiesAction.dispose();
		quitAction.dispose();
		moveAction.dispose();
		renameAction.dispose();
		goIntoAction.dispose();
		backAction.dispose();
		forwardAction.dispose();
		upAction.dispose();
		nextAction.dispose();
		previousAction.dispose();
		if (categoryAction != null) {