this is a problem that has been affecting two of my apps for a long time, and it seems to come and go without an explanation. No error in the logs, I am using:

  flutter_web_auth_2: ^4.1.0

I am on the VPN, I can feed the OAuth URL to Safari and it will load, authenticate and try to open the app.

I have followed a few different paths, form the most obvious (erase and reinstall) to bumping versions of the pub, erasing browsing data, etc etc ..

This does not affect the device, simulator only. I spent a few days a couple of weeks ago trying to debug this, then the apps started to work again, without explanation. I am lost!