Angularfire signInWithRedirect / signInWithPopup not working on Ionic Capacitor

Version info

“firebase”: “^7.17.1”,
@angular/fire”: “^6.0.2”,

Other (e.g. Ionic/Cordova, Node, browser, operating system):
Ionic:

Ionic CLI : 6.11.1 (/Users/…/.nvm/versions/node/v12.16.1/lib/node_modules/@ionic/cli)
Ionic Framework : @ionic/angular 5.2.2
@angular-devkit/build-angular : 0.901.9
@angular-devkit/schematics : 9.1.9
@angular/cli : 9.1.9
@ionic/angular-toolkit : 2.2.0

Capacitor:

Capacitor CLI : 2.2.0
@capacitor/core : 2.4.0

Utility:

cordova-res : 0.15.1
native-run : 1.0.0

System:

NodeJS : v12.16.1 (/Users/…/.nvm/versions/node/v12.16.1/bin/node)
npm : 6.14.7
OS : macOS Catalina

Run afAuth.signInWithRedirect() or afAuth.signInWithPopup in android will change URL to *.firebaseapp.com for authentication but the actual page keep blank
Expected to open browser for authentication.

It’s working on Ionic + Cordova, may I know how could I make it on Ionic + Capcitor?
Thanks.