The world of global mobility often resembles a highly complex game of chess, where every move must be carefully considered. For highly qualified professionals and companies that move talent across borders, legal certainty regarding residency status is paramount. But what happens when the administration itself disregards the rules of the game? A recent ruling by the Higher Administrative Court of Lower Saxony (OVG) on April 1, 2026 ( Case No. 13 ME 47/26 ) is currently causing a stir in the…