For transparency: the answer in question that did not receive the bounty is mine. The two answers in question are:
This question, Can a single dose of poison applied to an edged weapon be used multiple times?, had a bounty placed on it with the specific stated intent of gathering an updated answer that took errata concerning poisons into account. The errata was issued to the DMG after the question was originally asked and answered.
A couple noteworthy points about this question are that it refers to "regular poison" which is not a term used in the PHB or DMG and the user who placed the bounty was not the OP (and thus had no available info concerning what the term "regular poison" was intended to mean).
The chosen answer, while commendable, does not address the full scope of the question/errata, nor does it accurately address if the errata is relevant to the answer in all situations, nor does it address what "regular poison" actually is.
Additionally, the user who posted the answer that was awarded the bounty commented on the other answer (mine) stating
Well researched and better than my answer. I've up voted yours and would down vote my own if I could ... I would think this should be made the official answer.
They also suggested an edit which I felt I added. I understand the issuer of the bounty alone makes decisions concerning the awarding of the bounty, but I think it's telling that the user with the selected answer preferred another answer.
My answer, while long, addressed the ambiguity of the term "regular poison" and also addressed how/if the errata would affect the ruling based on what this term was intended to mean.
I'm not interested in receiving the rep points of the bounty, but I am very curious why these answers were judged this way.
Can anyone shed some light on why this bounty was awarded this way?