unit – Capsule collider does not detect collisions on rounded up / down portions

I use Unity's built-in character controller with a default collider of capsules, but the collation does not fire as expected. When I hit him up or down (the rounded parts), he does not hit. I have uploaded a video so you can watch in action. https://www.youtube.com/watch?v=2SBOfKx9wgg

I have never faced this behavior before and I do not understand what is happening. Do you have an idea?