That's Adblock browser. Adblock Plus the app, as far as I'm aware, creates a fake VPN in order to block adds in all apps.
Addblock browser is just a browser and has no effect on external apps.
The browser gets launched by the Krugsri app *after* hitting the false positive on attempted log in.
Also, I can log into internet banking just fine using addblock browser. But the UI is terrible, it can't use fingerprint login, and it doesn't support QR scanning amongst other things.