dim(X) gives wrong answer for X=Spec(A) and A localized at a prime ideal

[afkafkafk13]

julia> R,(x,y,z) = QQ["x","y","z"];

julia> U=complement_of_prime_ideal(ideal(R,[x,y]));

julia> S,_ = Localization(R,U);

julia> X = Spec(S)
Spectrum
of localization
of multivariate polynomial ring in 3 variables over QQ
at complement of prime ideal(x, y)

julia> dim(X)
3 WRONG

X =Spec(S) and S is clearly a regular local ring of Krull-dimension 2 (as the maximal ideal is generated by 2 elements x and y). so X should have dimension 2.
(Caution: Do not be misled by trdeg_QQ ( Quot(S) ) = 3)

Suggestion for ad hoc fix (to be improved later on): forbid dim for localizations at prime ideals for the time being.