Like said in that issue, it seems the limit passed to XamContentCreateEnumerator is actually a limit on how many results XamEnumerate should return per call, not a limit on the number of enumeration items in total.
These changes fix Sonic Unleashed not loading more than 1 DLC (it passes 1 as the limit, but then loops over XamEnumerate to load in each DLC one at a time), and likely many other games.
gibbed