Bug Report

After entering a freshly received Telegram verification code immediately, I get PHONE_CODE_EXPIRED error on some accounts, while other accounts work fine.

Description

I tested the login flow with 5 Telegram user accounts:

• 3 accounts on DC5 → work normally
• 2 accounts on DC2 → fail immediately

All verification codes are submitted within seconds of being received, so they should not be expired.

Test Result

• Working accounts: Receive 6-digit code → login successfully
• Failing accounts: Receive 5-digit code → instantly return PHONE_CODE_EXPIRED

Error Message

authentication attempt failed: sign in failed: sending AuthSignIn: [PHONE_CODE_EXPIRED]
The phone code you provided has expired. (method: AuthSignIn) (code 400)