DaveTheCoder That was a terrible feature. It rearranged the order of the replies, making the thread confusing. It could have added a "here's the accepted answer" link without rearranging the replies.
TBF we had a customized version of the plugin which kept the original comment visible in it's place as well, the one that appeared at the top was actually a duplicate of the accepted answer, with the plugins original version hiding the real post. We just had it not css display:none
the original post in the customized version.
There was one point where it broke and went back to the original version though, perhaps you are thinking of that time.