Bug 343406 Trim stacks stay invisible in other perspectives even when rendered children are under it
1. Minimize the 'Outline' view's stack. 2. Window > Open Perspective > Debug 3. Activate the 'Debug' view. 4. Ctrl+M 5. There is minimized stuff in the left trim but the right trim is completely empty.
bundles/org.eclipse.e4.ui.workbench.addons.swt/src/org/eclipse/e4/ui/workbench/addons/minmax/MinMaxAddon.java
if (bar.getWidget() == null) {
				
				bar.setToBeRendered(true);
				
				context.get(IPresentationEngine.class)
						.createGui(bar, winShell, window.getContext());
			}
		} else {
			
			MUIElement parent = trimStack.getParent();
			if (parent.getWidget() == null) {
				
				parent.setToBeRendered(true);
				
				context.get(IPresentationEngine.class).createGui(parent, winShell,
						window.getContext());
			}
			trimStack.setToBeRendered(true);
		}
	}
	private String getMinimizedElementSuffix(MUIElement element) {
		String id = ID_SUFFIX;
		MPerspective persp = modelService.getPerspectiveFor(element);
		if (persp != null) {
			id = '(' + persp.getElementId() + ')';
		}
		return id;
	}
}