Scenario 23: Your 'Login with Google' button works fine in Chrome but fails silently in Safari with strict cookie settings enabled.

Some browsers' stricter default SameSite/third-party-cookie policies can interfere with certain OAuth2 redirect-based flows that rely on cookies during the authorization/callback round-trip. Mitigate by ensuring your session/state cookies used during the OAuth2 flow are set with appropriate SameSite=Lax (or None with Secure) attributes, and test the full flow across all target browsers, not just Chromium-based ones.