The conjectural cohomological stable-envelope formula for bow varieties

Let $\DD$ be a brane diagram and let $f\in\Ch(\DD)^{\T}$ be a fixed point. For each tangent-weight term $\alpha_{x,y,k}\frac{x}{y}\mathbf h^k$, call it $f$-small when its restriction satisfies $\Loc^K_f\left(\frac{x}{y}\right)=\frac{u_i}{u_j}$ with $i<j$. Define

$$\tilde W_f=e\left(\sum_{f\text{-small}}\alpha_{x,y,k}\frac{x}{y}\mathbf h^k\right),\qquad W_f=\frac{1}{N_f}\operatorname{Sym}(\tilde W_f),$$

where $\operatorname{Sym}$ is the symmetrizing operator and $N_f=\prod_{U\text{ D5}}\prod_{i=1}^s d_i^U!$. Cohomological stable-envelope conjecture. Cohomological stable envelopes exist for bow varieties, and the stable envelope for $f$ is represented by $W_f$. The conjecture further asserts that the substitution defining each cohomological restriction of $W_f$ has a limit that exists and is a polynomial, so that $W_f$ defines an element of $\bigoplus_{f'}H^*_{\T}(f')$. The formula proposes an explicit construction of stable envelopes from tangent weights and fixed-point combinatorics; the supplied passage gives no resolution or partial proof, so its status is open.