Setting width of Layout-Members does not always work

[andy.2003]

Hello,

setting the size of a SectionStack after adding it to a HLayout but before drawing everything does not work.
Here is the code to reproduce this bug:

	@Override
	public void onModuleLoad() {
		SectionStack left = createSectionStack("red");
		SectionStack right = createSectionStack("blue");

		// works
		// left.setWidth("30%");
		// right.setWidth("70%");

		HLayout panel = new HLayout();
		panel.setWidth100();
		panel.setHeight100();
		panel.setMembers(left, right);

		// Does not work
		left.setWidth("30%");
		right.setWidth("70%");

		panel.draw();

		// works again
		// left.setWidth("30%");
		// right.setWidth("70%");
	}

	private SectionStack createSectionStack(String color) {
		Label label = new Label();
		label.setBackgroundColor(color);

		SectionStackSection section = new SectionStackSection();
		section.setItems(label);

		SectionStack stack = new SectionStack();
		stack.addSection(section);
		return stack;
	}

I'm using Smartgwt LGPL 3.1p 2013/01/02

regards Andreas