I have made a report to Valve on a Steam issue where electron apps in Linux will not properly execute, take ages to even start but will only flash open and can even stall or cause issues with Steam which will make it unresponsive after you launch the non steam apps.
I have a full git report on the issue
here
Hopefully this gets corrected soon as this renders all my software specifically for the Steam Deck unusable unless you are in desktop mode but on normal Linux distros you will just be unable to add it to Steam and launch from Steam and the big picture mode especially if you are in the beta branch using the new Steam big picture UI.