21:07:21stassatsand that's for blocks, which do change their numbers
21:10:30stassatshow did it ever work? the current SSET doesn't store sset-element-number directly, but it hashes it, while sset-adjoin would work ok, sset-member will not work correctly
21:11:12stassatsor does it depend on copy-sset rehashing the number or something?