Moonst@r, does the same method of changing the aspect ratio apply to the frames during cutscenes?
The mod should now work correctly. The only issue is with the text. In widescreen format, it doesn't stretch into a single line; instead, it wraps to the next line earlier than desired, and I don't know how to fix it.
Added 16 minutes later
I'm not sure – that's not entirely accurate. I made it for a widescreen, but I wasn't happy with the fact that when the game window is resized, words don't wrap when they should, and instead overlap with the button. Apparently, I didn't fine-tune the settings properly. I decided not to bother and left it as it was.