How do Catholic theologians reconcile homoousion with the vulgate translation of Hebrews 1:3?

How do Catholic theologians reconcile homoousion with the Vulgate translation of Hebrews 1:3? >(Vulgata Clementa) qui cum sit splendor glóriæ, et **figúra substántiæ ejus,** portánsque ómnia verbo virtútis suæ, purgatiónem peccatórum fáciens, sedet ad déxteram majestátis in excélsis > >(Douay-Rheims) Who being the brightness of his glory, and **the figure of his substance,** and upholding all things by the word of his power, making purgation of sins, sitteth on the right hand of the majesty on high. Isn't being a "figure of" God's substance indicate that he did not actually "share" God's substance?