What's Wrong with the Bankruptcy Courts?

The Judiciary Data and Analysis Office of the Administrative Office of the US Courts has launched a new feature called "Just the Facts," highlighting statistical trends in the US judiciary. Table 2 and Chart 3 of the inaugural report reflect a curious spike in the appellate reversal rate in bankruptcy cases in 2015. While the reversal rate for both ordinary civil cases and bankruptcy cases in the Courts of Appeals had hovered steadily around 10-12% from 2011 to 2014, the reversal rate in bankruptcy cases suddenly shot up to double that, 24% (!), in 2015. It is not entirely clear to me whether this is reversal of the Bankruptcy Courts' rulings or the District Courts' rulings (it may be a bit of both, taking into account direct appeals, etc.), but in either case, whoa! Anyone have any idea what happened here? Why did the appellate courts get so mad at the lower courts in bankruptcy cases all of a sudden the year before last? I wonder if this continued in 2016. Lots of Stern reversals? Something else? Curious.