Local structure conjecture for localized intrinsic étale morphisms

Let $T_1\to T_2$ be a localized intrinsic étale morphism of strongly sheafy adic spaces. Local structure conjecture. Any localized intrinsic étale morphism of strongly sheafy adic spaces is locally a composition of rational localization and finite étale morphism. This predicts an étale-like local structure for intrinsic morphisms in the category of strongly sheafy adic spaces; the supplied source does not indicate whether the assertion has been proved or remains open.