It's in your retesteth code https://github.com/ethereum/go-ethereum/blob/master/cmd/geth/retesteth.go#L631 See, this is why we said retesteth is a horrible idea. You are opening bug reports against Geth, we spend time trying to find it and it turns out that the crappy tester hacked into Geth is wrong. You are not testing Geth, you are testing some random extension that's not live code.