To make the game more realistic, the team made sure you could no longer run or jump through an opposing player's limbs, which was a complaint they heard repeatedly. This also means that the ball will actually ricochet off of a player's arm or leg, making you fight for better position. The team worked on tweaking the physics of the game, allowing you to play more physically and fight for the ball like real players do.
Please let this be the end of stripping the ball through a player's knee or blocking a shot from the armpit.
Hopefully diving for the loose-ball also won't result in your player suffering a separated shoulder as we've seen in the past :P