Oeding's symmetric border-rank conjecture for general monomials

Let $\alpha=(0<\alpha_0\leq\cdots\leq\alpha_{d-1})\in\mathbbm{N}^{d+1}$. For the monomial $x_0^{\alpha_0}\cdots x_{d-1}^{\alpha_{d-1}}$, its symmetric border rank is the least number of powers of linear forms needed in a limiting symmetric decomposition. Oeding's conjecture. The symmetric border rank is

$$\operatorname{brk}(x_0^{\alpha_0}\cdots x_{d-1}^{\alpha_{d-1}})=\prod_{i=0}^{d-2}(\alpha_i+1).$$

This gives the conjectured symmetric border rank of a general monomial and complements the known formula for its Waring rank. The supplied text does not state whether the conjecture has been resolved.