While fiddling around an issue I’ve just met, I’ve discovered a likely related issue which needed another MWE and description. I wanted to edit my question, but that would mean nearly doubling its length. However, a comment is out of the way (it is too short).
Should I edit my question in such a case? If I do should I try and make clear what is new and what isn’t (better for returning readers) or should I try to make it as coherent as possible at any given moment (better for new reader)? When it becomes stable (or when it gets a satisfying answer), should I refactor the question for future readers or not?