Physics of Strange Collisions

Question

I start the game and I use Farseer as a physics engine.

I installed several drawers acting as terrain tiles, and a drawer as a player. The clashes between the two are very strange, they intersect and glide when it is not a “direct” hit.

Here's a GIF of what happens: http://i.imgur.com/HR0J0D3.gifv

And here are the fragments:

//Creating the body PhysBody = BodyFactory.CreateRectangle( Transform.World.PhysWorld, ConvertUnits.ToSimUnits(Width * Transform.Scale), ConvertUnits.ToSimUnits(Height * Transform.Scale), 5, ConvertUnits.ToSimUnits(Transform.Position.ToVector2())); //The tiles are static, the player is not PhysBody.BodyType = Static ? BodyType.Static : BodyType.Dynamic; //Drawing the test rectangles ShapeRenderer.Instance.DrawRectangle( sb, ConvertUnits.ToDisplayUnits(PhysBody.Position).ToVector2(), new Size2((int)(Width * Transform.Scale), (int)(Height * Transform.Scale)), Color.White); 

I don’t think the rest is important, all I did was create a world with gravity 9.8.

I also tried without using Transform.Scale and with only one field below the player, and the problem is still happening.

I use the Ultraviolet graphics engine