You can define a property under content as string in stoplight studio and make the change of adding the 'format: binary' in swagger.json code. Stoplight studio will respect the change without overriding it.
If you get the "GPU process isn't usable. Goodbye" message whilst trying to run this due to using an updated version of Electron, the simple fix is to add the --disable-gpu-sandbox flag to the exec command in the desktop shortcut (/usr/share/applications/stoplight-studio.desktop by default) or when launching from terminal
Thank you for the package. FYI I had to install 'fuse2' to get the app image to run. (Also, for other users, if you are running it directly from the terminal and not via the desktop file, the file can be located in /opt/appimages/stoplight-studio.AppImage).
df19127ead