KUVA LICH - Too much good luck with RNG?

[KikuVasNormandy]

Since this has happen to me at least twice (maybe three) to me, I think is may worth the comment.

I was hunting my Lich number 16 with my usual method, just leave the previous combination there until I start to figure out the new combination... get the first time wrong like expected but obtained the first Requiem in that point, put that one in the first slot to try (as usual) and move one to farm the second one, once the Lich wanted dead again I face it to see if the know one was at least the first one and.... ALL were correct, so... or there is a bug in place or I just got the best RNG with that Lich.