Concave MeshColliders not always sending collision callbacks?

I just started making a map out of mesh colliders with ProBuilder, but for some reason, my bullets now aren’t always sending collision callbacks upon hitting the wall. It works fine with a normal BoxCollider or convex shapes, but not with a concave MeshCollider.

I’m linking a video if it helps. The BoxCollider is on the bottom, and the MeshCollider is the other one. I have some debugs at the bottom for when I’m getting callbacks, but I did forget to add the convex mesh test in the video (but it’s the same as the BoxCollider).

Concave MeshCollider wall (doesn’t work properly):

BoxCollider wall (works properly):

If anyone has any ideas, I’d be glad to hear them!

Thanks in advance!