Bug 339877 ToolBarManagerRenderer should not dispose of items that weren't created by the rendering engine
1. Window > Open Perspective > CVS Repository Exploring 2. The 'CVS Repositories' view doesn't have the 'Add CVS Repository' tool item. 3. Resizing the view doesn't help. 4. Close the view. 5. Reopen it. 6. Now it's there. Or maybe not, it didn't come back for Paul anyway.
bundles/org.eclipse.e4.ui.workbench.renderers.swt/src/org/eclipse/e4/ui/workbench/renderers/swt/ToolBarManagerRenderer.java
}
		addToManager(parentManager, itemModel, marker);
		linkModelToContribution(itemModel, marker);
	}
	/**
	 * @param parentManager
	 * @param itemModel
	 */
	private void processToolControl(ToolBarManager parentManager,
			MToolControl itemModel) {
		final IEclipseContext lclContext = getContext(itemModel);
		ToolControlContribution ci = ContextInjectionFactory.make(
				ToolControlContribution.class, lclContext);
		ci.setModel(itemModel);
		ci.setVisible(itemModel.isVisible());
		addToManager(parentManager, itemModel, ci);
		linkModelToContribution(itemModel, ci);
	}
	/**
	 * @param parentManager
	 * @param itemModel
	 */
	private void processDirectItem(ToolBarManager parentManager,
			MDirectToolItem itemModel) {
		final IEclipseContext lclContext = getContext(itemModel);
		DirectContributionItem ci = ContextInjectionFactory.make(
				DirectContributionItem.class, lclContext);
		ci.setModel(itemModel);
		ci.setVisible(itemModel.isVisible());
		addToManager(parentManager, itemModel, ci);