It appears running any resolution outside of 16:9 causes graphical alignment issues, i.e. Items slotted in the paper doll and inventory don’t line up with the cosmetic border/overlay.
Thanks for the bug report. This has been fixed, and the fix will be present in the next demo.
I am running at 21:9 and when I first got the game it seemed to be working fine. However it is not not displaying correctly. It shows it in a letterbox resolution no matter how I set it.