Thanks for this, you guys, but here's a thing... I've just been advised by someone on the Trüberbrook forums on Steam who said that using this method would lead to invisible objects/text:
SP4RT4N3R wrote:
There are also some objects, especially stuff to read, that doesn't appear with the 21:9 Fix.
Those will just be invisible after you interact with them.
For example there are some texts in chapter 2 you can't interact with that are adding to the lore.
As soon as you click on them they are invisible and you can only see the page number on the bottom of the screen.
I've yet to notice something like this myself, but just in case, I thought I'd leave this headsup here.