Link with Multiple Accounts is not working

[AntonioVentilii]

Everything is set as basic config. I logged the first time with GitHub and then the second time with Facebook and this was the result. Not even the callback signInFailure is triggered. Simply that message appear in "redirect" mode.

"dependencies": {
...
"firebase": "^9.23.0",
"react": "^17.0.2",
"react-dom": "^17.0.2",
"react-firebaseui": "^6.0.0",
...
},