When EA Sports released the free World Cup update for FIFA 18, some players thought it played differently compared to the main game. Actually, it was more than some - there were loads of players who thought it played differently.
These players, who suspected EA Sports had tinkered with the gameplay of FIFA 18 for the World Cup update on the quiet, claimed it felt slower, with nerfed dribbling and passing. I've also seen plenty of people say the World Cup mode plays more "arcadey" than the main FIFA 18 game, with overpowered shooting from distance. I've also seen people say lofted through balls are more effective, and even spotted the suggestion the World Cup update reverts to gameplay before FIFA 18 was patched.
The truth is, the gameplay in the World Cup update is exactly the same as the gameplay in the main FIFA 18 game, Andrei Lazarescu, producer of the Switch version of FIFA and the World Cup update confirmed to me at E3. So, why do players think there's a difference?