Has anything changed with custom UITableView prototype cells constraints since iOS 8.3?

I have recently installed iOS 8.3 on my iPhone (I had iOS 8.1 before).

I also updated the iOS SDK from iOS 8.1 to iOS 8.3.

Since I updated it some custom prototype cells I had seem to be misplaced.

Has anything changed from iOS 8.1 to iOS 8.3 regarding the way constraints are handled?