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
return null;
	}
	void minimize(MUIElement element) {
		createTrim(element);
		element.setVisible(false);
		adjustCTFButtons(element);
	}
	void restore(MUIElement element) {
		MWindow window = modelService.getTopLevelWindowFor(element);
		String trimId = element.getElementId() + getMinimizedElementSuffix(element);
		MToolControl trimStack = (MToolControl) modelService.find(trimId, window);
		TrimStack ts = (TrimStack) trimStack.getObject();
		ts.restoreStack();
		adjustCTFButtons(element);
		element.getTags().remove(MINIMIZED_BY_ZOOM);
	}
	void maximize(final MUIElement element) {
		MWindow win = modelService.getTopLevelWindowFor(element);
		MPerspective persp = modelService.getActivePerspective(win);
		List<String> maxTag = new ArrayList<String>();
		maxTag.add(MAXIMIZED);
		List<MUIElement> curMax = modelService.findElements(persp == null ? win : persp, null,
				MUIElement.class, maxTag);
		if (curMax.size() > 0) {
			for (MUIElement maxElement : curMax) {
				if (maxElement == element)
					continue;
				maxElement.getTags().remove(MAXIMIZED);
			}
		}