Under testing by Sweden's Teknikens Värld, Porsche's downsized crossover – specifically the Macan S Diesel, for what it's worth – didn't flip over, but it skidded off course. In real-world conditions, it follows, the vehicle could run off the road or into oncoming traffic. The testers ran the test several times, and even removed excess weight from the vehicle, and each time it reacted the same way.
In response, Porsche has explained that the behavior is the result of its Active Rollover Protection system kicking in. When the system detects that the vehicle could drastically oversteer, flip over or lose its tire, it momentarily applies the brake on the front outside wheel, allowing the vehicle to shed the cornering forces without losing it completely.
The bottom line, though, is that the chassis clearly wouldn't be able to handle the situation without the electronic intervention, which may not be that surprising for a top-heavy crossover, but we'd have expected better of a company like Porsche.