The fact that they used to reply to this forum saying a fix was coming and have completely stopped replying once they updated the game with ultrawide support for loading screens and cut scenes makes it pretty clear that was their intended fix and nothing else is coming, especially since DLC and other updates have occured.
I'd highly recommend anyone with an ultrawide monitor who already unfortunately owns the title, that they download a mod that has been available since Nov 2019. It's super easy to use, and I believe only requires a minor .ini tweak. There's also other graphical issues with the game anyways that require further .ini tweaks or mods to be installed anyways, so might as well do those at the same time too.
Obsidian/Black Isle and that whole group was one of my favourite developers since the early Fallout days, and subsequent Fallout New Vegas days. This whole situation has really knocked them down a peg in my opinion. Since I doubt they'll fix this, I'm really hoping this is an isolated incident and that they get back to being the incredible developers I had believed they were for all future titles.