Help Rope not rendering Unity 2021.3.14

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Hey guys! First want to mention that it's not my first rope ) Strange thing: when I making rope from scratch - rendering doesn't work for me: neither extrude mesh nor line renderer. When I just dragging that rope to a solver that I've made previously as a prefab - it works. And most interesting part, that when I return that rope back to the original solver - it renders without any issues