Repeated Login with the Same Account Got Sync Error

Steps to Reproduce:

Ensure user is already logged in and syncing data normally.

From the app settings, manually trigger a new login flow without signing out first.

Complete the login process again with the same credentials.

Repeat step 2-3 two more times.

Expected Result:

App maintains a single sync session for the account.

Background data sync operates normally.

Actual Result:

After 3rd login attempt:

Sync failures occur with error: SyncAdapter: sync error

Device battery drains abnormally fast (3x baseline)

User playlists show duplicated entries