Google Sign In gets hung on any app w iPhone 12 iOS 14
I used to have an iPhone X, logged into all apps perfectly fine when I needed to use my Google account. I got the iPhone 12 and transferred everything from my old phone. Most apps got reset and I have to log in again. Whether I try adding my Gmail account to the Mail app, or I try logging into Google Maps or Google Photos or Google Sheets apps, the exact behavior occurs: I type in my Google email, I get prompted "~whichever application~ wants to use google.com to Sign In", I say Continue, and it gets stuck looping. I never even reach the password prompt. I have tried everything from disabling cookies, logging in with different accounts, I cleared all cache, checked my Google account for any security flags and allowed new logins. Everything I found on the internet I've tried. Nothing has worked.
iPhone 12 Pro, iOS 14