Colliders in unity behaving the way they, as I think, shouldn't <p>I am learning to work with unity now and I noticed one error. I am working with 2D and have two box colliders. </p> <p>One of them is: </p> <pre><code>Size : X = 8, Y = 0.3 Center: X = 0, Y = 4.9 </code></pre> <p>The Other one is </p> <pre><code>Size : X = 3, Y = 0.6 Center: X = 0, Y = 3.95 </code></pre> <p>So from this information we can see that the gap between those two colliders is 0.5, but a rigidbody with a circle collider with a radius of 0.25 is not able to move through that gap, it gets stuck. </p> <p>Maybe there's something I don't know about the way colliders work and you could shed some light.</p>