A silly-sounding but very serious problem.
The moose test first rose to real fame outside of Scandinavia just a few years ago, when the Jeep Grand Cherokee failed it spectacularly. The test simulates the conditions present when swerving suddenly at speed to avoid a moose in the road. Although it's a uniquely Scandinavian thing, the test is really quite useful for everyone, and the following video will unfortunately show the Porsche Macan failing it. And pretty obviously failing it at that.
Porsche has responded by saying that the wheel lockup is part of the vehicle's rollover protection system, in theory preventing an even worse accident. But that's still a fail.