Fixes are on the way, at least for the edit button and the “no author” checkbox.
The order of the author credits being jumbled is a new one to me. I wonder if it is the same issue we are facing with the order of works as described in Order of works in editions is not static anymore - #3 by indy133
Both of those have the same symptom of the original order not being preserved, so perhaps they have the same root cause too. I will investigate.