I wonder if Anchor is really going to scale, it basically binds the sides of the control to the container, and scaling is based on the product of this. E.g. if both left and right sides are fixed, the control will scale in width because the anchor will try to keep the position of the left and right sides intact.
Keeping this in mind, you should think about what you need when the shape is enlarged and you have more space. In the above example, you might want the lbLog list to say that it remains the same size, but the Simulate panel accepts any sapce created. For such a scenario, you must snap the panel to both the left and right sides, while you will only attach the list box to the correct one.
Basically, if you want all your controls to scale proportionally (true scaling, I would say, as opposed to scaling in the case of binding), then Anchoring is not the right solution.
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