I had an issue with an R gis-related package recently and posted it on gis.stackexchange. I was very pleased when the developer themself commented on my post and led me to fix the error. But never answered my comment/question in response to their comment to validate the reason behind the error message nor gave an official answer.
In the interest of making the question/solution useful for other users, I would like to close the question. If it was any other user, I would post an answer with solution I found based on the comment with community wiki as author. But I hesitate in this situation because the developer clearly know their code better than I do and they are better placed to answer or at least can confirm I am right. Then again, a developer is probably busy.
Is there a way to remind a user to answer a question? (do they even get a notification when there is a response to comment?) Is there an acceptable delay to allow a user to post their own answer and then just assule they won't and take care of it myself?