First it's great to have an edit feature so that's good.
What I notice after the last big change is that if I edit that works but the Save Changes button when clicked doesn't seem to work.
Well, it does work but you must be patient and know not to click it again or else you get more than one entry in the activity stream.
Since it works, it's hard to ask for a fix but if possible, grey it out on click or ignore more than the first click?