I noticied this question: Notification when my answer is unaccepted? and Wrong display of reputation changes (unaccepts again) but saying this was fixed and that this feature was in the main Q&A platform however I have just received an unaccept which just said -15 rep but didn't give me any reason on my timeline.
It wasn't until I actually asked a question about hidden rep changes and checked my rep 5 times over that I realised it was due to an unaccept.
Any chance this feature might be broken? (hence why I've marked this as a bug)
I have just found out this is because I got the accept and unaccept in the same day which isn't actually a bug. Maybe it might be a feature request to show unaccepts as well as accepts despite being of the same day?