[Bug] GetAccountAsync returns null when account is in returned collection from GetAccountsAsync

Which Version of MSAL are you using ? MSAL 4.17.1, MSAL 4.19.0

Platform xamarin android

What authentication flow has the issue?

• Desktop / Mobile
  • Interactive
  • Integrated Windows Auth
  • Username Password
  • Device code flow (browserless)
• Web App
  • Authorization code
  • OBO
• Web API
  • OBO

Other? - please describe;

Is this a new or existing app? The app is in production, I haven’t upgraded MSAL, but started seeing this issue. I am not able to say exactly after which version I stared seeing this issue

Repro

var account = await _msalClient
    .GetAccountAsync(identifier)
    .ConfigureAwait(false);

if (account == null)
{
    var accounts = await _msalClient.GetAccountsAsync();
    account = accounts.FirstOrDefault(a => a.HomeAccountId.Identifier.Equals(identifier, StringComparison.OrdinalIgnoreCase));
}
return account;

Expected behavior The account for the given identifier should be returned from the GetAccountAsync(identifier) call

Actual behavior GetAccountAsync(identifier) returns null but the call to get all accounts and then select the first 1 with the given identifier does return an account. GetAccountsAsync() returns many duplicate accounts (45 accounts in my case but only has 5 distinct accounts)

This is using brokered authentication with Authenticator

Possible Solution

Additional context/ Logs / Screenshots Authenticator Incident ID: 3SNRN2DT

[pmaytak]

Verified that this works (with both content provider and account manager) on the latest main (4.30.1). GetAccountAsync finds the account correctly and GetAccountsAsync returns only unique accounts. There’s been a few refactorings to that code since 4.19. Closing; @bemartin please reopen if it’s still an issue.

[bgavrilMS]

@trwalke - can you take a look at this as you are investigating other issues in Android area?