My tableview has an extra space at the bottom, as you see in the picture:
All the rows in the tableView have a fixed height of 71pt.
I had this issue when I flipped my UITableView upside-down for a chat messaging screen.
Before I flipped the table view, the content inset was leaving a blank space at the top so that when we scrolled all the way up, the content was not obstructed by the navigation bar. Once I flipped it the inset was moved to the bottom.
Change your 'Content Insets' to Never in the Size Inspector of your UITableView to get rid of this space at the end.