EDIT: fruithapje21 now hosts their ultrawide mods on a GitHub page which can be found here.

Original Post by fruithapje21:

This is an update to the Ultrawide UI FIX that fixes some of the issues present in the previous version.

What’s new:

• Menu map and mini map can now move independently of each other. This allows for having a cornered HUD version for all aspect ratios.
• Yellow selection box that was visible on the title screen and during dialog options has been removed.
• Header / footer text of the minus menu, scope and camera is no longer stretched.
• Removed black bars from dialog history and camera save menu
• Removed shadow from camera window

Issues that remain:

• UI elements belonging to 3D game objects (NPC text balloons, enemy health bars, item descriptions, etc.) are still stretched.
• Pre-rendered cutscenes play stretched.
• In the quest menu, part of the map is duplicated.
• Pictures taken with the in-game camera are squished.

Downloads:

• https://pixeldrain.com/u/3ybGLkGa (21:9 Center)
• https://pixeldrain.com/u/VANcqhPo (21:9 Corner)
• https://pixeldrain.com/u/uQJPN9P1 (32:9 Center)
• https://pixeldrain.com/u/Ewk8i1x2 (32:9 Corner)

Unpack the file in your mod folder and disable any other aspect ratio mods, controller mods, and / or BlackscreenFIX before using this mod.

I also created a custom tool to patch the Common.Product file with the UI changes. I mainly created this for myself to speed up testing new versions of the mod, but I made some changes so that it should run for everyone. For custom aspect ratios simply run UIFIX.bat and follow the instructions. To patch a controller mod with the UIFIX, replace the Common.Product file with the one from the controller mod and run UIFIX.bat. The default Common.Product file is the one from BlackscreenFIX.

Tool download: https://pixeldrain.com/u/t5NVyFQE (Use at your own risk)

Edit: Updated Tool