Firebase Authentication - Email field becomes empty

[spacen]

1. Users sign in as anonymous
   mAuth.signInAnonymously()
2. At certain point, sets email/pw
   AuthCredential credential = EmailAuthProvider.getCredential(email, password); mAuth.getCurrentUser().linkWithCredential(credential)
3. Most of them are OK. But the email field become empty for some users' account.

When this problem occurs, the user is not an anonymous nor non-anonymous.
The following is how these users looks like in the firebase console.

And the following is how an ordinary anonymous user looks like.

This only happens on Android. Not on iOS.
And the most important part is that I CAN'T REPRODUCE THIS BUG.

I've become aware of this bug through some crash logs.

Any help would be appreciated.

[google-oss-bot]

I couldn't figure out how to label this issue, so I've labeled it for a human to triage. Hang tight.

[ashwinraghav]

Thanks for the super clear report!

[spacen]

Maybe this is happening on iOS too.
I'm not 100% sure.

[sam-gc]

Tracking this internally (b/162959460). Thanks for raising this issue!

[spacen]

Any update? It's been more than 2 weeks.

[spacen]

@samhorlbeck @malcolmdeck @ashwinraghav Any news? Please.

[sam-gc]

Hi, unfortunately no update yet. We're still tracking this internally

[argzdev]

Hi @spacen, just bumping this thread. Since it's been a while, may I ask if you're still seeing this issue on the latest SDK?