Acronis Backup 12.5: Maintenance expiration date is not updated after manual sync

Symptoms

1. You use on-premise installation of Acronis Backup 12.5
2. You register maintenance renewal under your Acronis Account, then you synchronize licenses with account using Sync button under Settings > Licenses in backup management console.
3. After successful synchronization, the new maintenance expiration date does not appear in the console, you see old date or Expired.

Cause