I have a cube, a plane and a ball.
At first, I set the rigid body physics of the cube and the plane to passive and the ball to active. I set the strength of the force field physics of the cube to 0 at frame 1 and at frame 50, when the ball falls on the plane, I set it to -100. As expected, the ball falls on the plane and the cube attracts it.
But, after that I use the loop cut tool to cut the faces into multiple faces.
I add the Build modifier and set its start frame at 1 and length to 50.
But now, the ball doesn't hit the cube, but rather goes through it and falls into the bottom. Why does that happen?