Sure, but this is the past half dozen models of the phone made by the same company who makes the OS. You'd think these would be the easiest possible test cases for them to do up front.
I assume it's just a fraction of users affected, so it could be something like a service reading third-party app data and crashing due to a bug. The kind of thing that should be caught in code review, because comprehensive testing is next to impossible.
Because most test devices are likely constantly factory reset and aren't given the chance to live with multiple user profiles on them for a long period of time where cruft can build up and people can notice that using using external storage is broken.
