As of the last version (0.2.1) characters who are left in the frame in conversation seem to stand like half a head higher than those in the right. You can really tell with Elise, where when she's in the left you can see her spats and legs, while when she's on the right you can only see from the bellybutton up.
I'll be honest, I have no idea why this is. It's probably something to do with how SRPG Studio handles conversation sprites. I'll look into it, but I might not be able to fix it in any sort of timely manner.
Edit: For some reason it seems that the right portraits were set to display 50 pixels below the left portraits. I have no idea how this happened since it's not like this is the default and I haven't touched the screen that changes that ever, but I've put out the hotfix for it now.