Cannot login with username having format of email

According to 🐛 User email is missing and no longer required Needs work users without emails should not be possible. Is this site patched? Could we see the composer.json file?

Are you using added authentication modules: 🐛 error logging in with username Active ?

Closing this based on the OP having also posted in 🐛 error logging in with username Active . Does not seem to be a core issue and the contrib issue is fixed.