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For a JSF page, if I put a condition for the visibility property of a page component (like a boolean value), this component will disappear as the visibility was set to false. It would be better if it doesn't disappear because I should put another component over this one, no more visible. It would be better if it changes the graphic because it's not sure that the component is hidden. Thanks.
If I understand correctly, you demand that the invisible components are also somehow shown in the designer to get the user feedback about them. That is a relevant request, but currently not supported. I am marking this as RFE, and it's need to be addressed in the future. If I am wrong in the understanding, please, provide more details. Thanks.