I found this bug while try to learn from awesome Blind XSS writeup from [omespino](https://omespino.com/write-up-telegram-bug-bounty-whatsapp-n-a-blind-xss-stored-ios-in-messengers-twins-who-really-care-about-your-security/). As a newbie, all I have to do is following his writeup. Every payload mat…