The solution removes the vertical black bars from the story mode, menu screens and super moves.
- Download the ultrawide archive below.
- Unpack it to \Binaries\Retail inside the game folder.
To uninstall the fix, simply remove or move the files.
Note that the pre-rendered cutscenes will remain windowboxed, while the letterboxing at the beginning of each match will stay constrained to 16:9.
Tested on the latest Steam version primarily at 2560x1080 and 3840x1080.
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