Just to be clear, do you receive this error when following the sample instructions directly and simply using the pre-configured appId (com.auth0.samples) in auth.config.ts?
I’m currently unable to reproduce the issue you’re seeing in the sample referenced above. I’ve run into this issue (which is resolved with the android scheme) using the Auth0 Android SDK directly, but I can’t say I’ve seen this in an Ionic/Capactior/React app: