I tried all index.destination combination with the same result of tiled broken pattern, after test by Erik on answer hub im mostly certain the problem was in cache.
I can’t test it right now but the way i though i “fixed” it by deleting uv channel was actually that i Imported new mesh, with new uv, not REimported,
which means a new cache for it was built, which means i falsly assumed that was the solution.
Despite there is a way to solve this issue like in my case by importing new model, or removing the cache,
that doesn’t change the fact that i experienced a bug, in which the lightmap got literally stuck on that model in that project.
Due to what that could happen?