Axiom 'replace block' mode and Iris make the ground flicker/disapear

When using a combination of Axiom, and Iris (with a shader pack active, complemetary, BSL, bloop, any really), and enabling the "replace block" mode (keybind R), the ground will disapear and flicker when holding a translucent block (e.g., red stained glass). 1.21.4, Axiom 4.5.3, Iris 1.8.8.