Welcome to our Auth0 Community, Alex. We are in the process of developing updated guidance for Electron. As now, the guidance that we have published does not work for version 7 and 8 of Electron, I apologize for the inconvenience.
Be assured that this issue has been escalated internally for us to take action. I don’t have an ETA yet, but there’s someone already making process on the area. Please stay tuned 
We want to provide you the best set of practices to help your app succeed securely. 