A fast moving projectile that collides with a corner of two colliders returns an empty array of contacts in the OnCollisionEnter2D event.

To repro:
1) Open the "repro.unitypackage" and the scene "LiteralCornerCase".
2) Notice the setup - there are two box 2d colliders that form a corner and a bullet that is about to hit that corner at a high speed.
3) Enter play mode
4) Notice the "Got zero contacts!" log in the console, indicating the issue.

Removing either of the blocks that form the corner prevents this issue. Reducing the velocity of the bullet also prevents this issue.

The problem is in destroying the bullet inside the OnCollisionEnter2D event - this messes up any future contact checks. Since there are two blocks to be collided with, one gets the collision event and destroys the bullet. The other also gets the collision event, but the bullet has already been prepped for destruction, thus all contacts return 0.