Individual particles get scaled when using Mesh Renderer shape?

This might be hard to describe, so I have some pictures. The issue is that if I use a Mesh Renderer to control the Shape of a particle system, scaling the Mesh Renderer causes the particles themselves to be scaled. I'd like to avoid that. I want it to work the same way that using a Box shape, and scaling the box, works.

Here's the particle system using a Box shape:


And now, if I scale the box, the particles spread out to fill the volume. Note that the particles are just spread out, they aren't scaled at all.



Looks good. Now, I change it to use a Mesh Renderer for my shape instead. In this case, just a Unity cube:



But now if I scale the cube, it scales the particles themselves. Notice how the lightning is all stretched.



I don't want that to happen. I just want the scaled mesh renderer to control where the particles spawn, the same way it does with the Box shape. Is there a way to get the particle system not to scale particles?

 

I'm scaling the transform of the object that contains the Mesh Renderer. The idea was that I wanted to be able to scale the mesh arbitrarily, and have the particles continue to spawn on the surface of the mesh. But this also scales the particles. Sounds like that's expected behavior then?

 

Thanks for clearing it up, and that I wasn't doing something wrong at least. I've changed my approach to one of the other shapes that allows me to set the scaling mode.