Ivorry, your pre-patch screenshot does not look like my pre-patch one. Mine looked just like the post-patch one, as I changed nothing about the display at all. I do, however, have a file that looks much like yours from a guildie -- but it is much larger than yours. I have uploaded it so you can use that if you want. You will need to rename it after downloading it, as I labeled it just for you.
https://drive.google.com/open?id=1j...-vBq7lxlG-zNa3h
Just copying my old hotbar file into the folder fixed the lack of vertical hotbuttoms and inventory slots, so the UI is working fine for me now.