- have Kagi account with Google SSO enabled, Firefox for Android as default browser (pretty sure irrelevant, but including just in case)
- Download Android app
- Press "Log In" in top left corner
- Click on the Google logo under the "- or continue with -" separator
- Get redirected to the Google Auth page in Firefox
- Click to continue
- Be redirected to Kagi.com in browser, logged in
- App is still not logged in
I would expect to be redirected to the Android app, and for it to then be logged in.
I note that under "Open by default" in the app settings there are "0 verified links", which suggests that at the current moment it's not even possible for Google in the browser to redirect to the app.