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The border is there to make the platforms "disappear" when they reach the edge; it just covers them. ꜜꜜꜜꜜꜜꜜꜜꜜꜜꜜꜜꜜꜜꜜꜜꜜꜜꜜꜜꜜꜜꜜꜜꜜꜜꜜꜜꜜꜜꜜꜜꜜꜜꜜꜜꜜꜜꜜꜜꜜꜜꜜꜜꜜꜜꜜꜜꜜꜜꜜꜜꜜꜜꜜꜜꜜꜜꜜꜜꜜꜜꜜꜜꜜꜜꜜꜜꜜꜜꜜꜜꜜꜜꜜꜜꜜꜜꜜꜜꜜꜜꜜꜜꜜ
