I think you mean Element doesn't show previews when E2EE is on. This is not a fundamental limitation but a default setting in order to preserve privacy. You ca

I think you mean Element doesn't show previews when E2EE is on. This is not a fundamental limitation but a default setting in order to preserve privacy. You can easily turn URL previews for a given E2EE room on by going to the room settings > General > scroll down to Other > URL Previews.