It didn't worked in linux Mint 21.x, in linux Mint 22 it works great, the sound share is incredible, even better than windows.
Works like a charm for the reason I needed it (working screenshare audio). Some features - like unread badges - don't work, and as far as I'm aware, that's because this is a special wrapper for the browser version. I'll keep using regular Discord for the day-to-day, and Vesktop whenever I need to screenshare something - and for that purpose, this is wonderful and works immediately. Thank you very much!
Really grateful to everyone who has, and is, contributing to this project. Worked right out of the box, (Mint 22, at the time of writing) thanks!