Why was jabulani world cup 2010 matchball quite controversial?

The Jabulani match ball used in the 2010 FIFA World Cup was controversial due to its unique design and performance characteristics. Players and goalkeepers criticized it for being too light and having unpredictable flight patterns, making it difficult to control and predict. The ball's smooth surface and 8-panel construction were seen as contributing to these issues, leading to concerns about fairness in play. This sparked debates among players, coaches, and fans regarding its impact on the tournament.