Separating properties $(\kappa_2)$ and $(\kappa)$

Determine whether there exists a separable metrizable space with property $(\kappa_2)$ but without property $(\kappa)$; equivalently, determine whether there exists a separable metrizable space $X$ such that $B_1(X,[0,1])$ is Baire while $B_1(X)$ is meager.

Background

Property (κ2)(\kappa_2) is defined by requiring that, for every sequence of pairwise disjoint finite sets split into two parts, some subsequence has the two resulting countable unions separated by disjoint GδG_\delta-sets. Property (κ)(\kappa) requires every pairwise disjoint sequence of finite sets to have a strongly point-finite subsequence. The paper notes that property (κ)(\kappa) implies property (κ2)(\kappa_2), but does not establish whether the implication can be strict for separable metrizable spaces.

Through the cited characterization of Baire-one function spaces, property (κ2)(\kappa_2) corresponds to B1(X,[0,1])B_1(X,[0,1]) being Baire, whereas property (κ)(\kappa) corresponds to B1(X)B_1(X) being Baire. Thus the proposed topological separation is equivalent to asking whether the bounded-valued Baire-one function space can be Baire while the real-valued Baire-one function space is meager.

References

Question 1. Is there a (separable metrizable) space with the property $(\kappa_2)$ but without the property $(\kappa)$? It is clear that this question is equivalent in a function context to the following: Is there a (separable metrizable) space $X$ such that $B_1(X,[0,1])$ is Baire, but $B_1(X)$ is meager?

Some function applications of weak $λ$-spaces  (2608.30278 - Osipov, 31 Aug 2026) in Section 5, Open questions, Question 1