I deleted my own answer to this question: Does the Quran say in its verse 4:89 that "Those who reject Islam must be killed"? while the question was on IslamSE .
Then my answer was somehow undeleted by someone else or some algorithm and the whole history of the question being migrated, repatriated, and my answer being deleted and undeleted were erased, as well as my comment about why I was deleting my answer.
At this point, I don't really mind that my answer was undeleted, but I think it would be better if there was an edit history that showed that the answer was deleted by me, and then undeleted by someone else or by a program.
My question then is was my answer undelete by human or algorithm? and was the undeletion process by-design or a bug?