Particle System with Renderer.Mode=Mesh not working right with Shape=Mesh

Hi, So the Particle System is set to RenderMode=Mesh (the brown boxes), and the Shape is also set to Mesh (a cube, which in the below image is stretched). Shape.Type=Vertex. What I’d like to see if the mesh particles being emitted from the mesh itself, but in the image below, you can see the mesh particles are all starting at a position that is away from the Shape mesh. I

When the Renderer Render Mode=Billboard, then I see the particles emitting from the shape mesh vertices as expected.

What gives?

I’m trying to have a particle effect emit wood fragments when a crate is shattered by a weapon, but due to this issue, when the crate is small, the fragment particles are being generated well outside the exploding box instead of inside the box. I would think this would be a reasonably common thing people would try to do, so I’m puzzled why I’m see this behavior.

Add this issue to a long line of issues that I figure out immediately after posting. It’s crazy how often this happens!
So just in case anyone anyone else has this problem, the fix was to use Shape=MeshRenderer instead of Shape=Mesh.

As far as I can tell, the above behavior is a bug. If anyone can explain how it’s not a bug, feel free to chime in. I guess I’m wondering why, if the the Shape=MeshRenderer delivers the correct behavior, then what use is Shape=Mesh anyway?