Since editing a comment will not trigger a notification, I am not sure I would want to change this, as otherwise someone would attach a mockup, screenshot or even a patch and the project admins would not be notified about it.

Is that really a bummer to you?

Yes, it's become a real problem. Sometimes I forget to upload a mockup or upload the wrong one (or I have to update it) , and i have descriptions / specs around each mockup so it's a real problem. Uploading mockups is difficult as it is because the process is slow, I have to wait for the attachment to appear in the comment field which is delayed, and to have to delete the comment and do it all over again (and i can't edit the comments order to make them in the right order) is a problem.

eg this ticket is a good example; we have some corrections to the mockups and I can't update them without deleting comments and re-making them which is a lot of effort:

https://pagure.io/fedora-hubs/issue/283

Here's another example. Just did this by accident. Now have to delete and remake comment.

Just one question: Should we send notification on editing comment(will have to add this feature) or attach the file silently?

I would do the later tbh

The last update was 5 years ago, no further requests, updates or actionable tasks since then, I'm going to close this issue for now to reduce our backlog.