I was using Unicode characters to display country flags to bot users, ( 🇮🇷 for Iran as example) , eventually I have noticed that this feature is not working on WebZ version anymore. I am not sure if this is a bug or a new feature supporting Unicode characters. Everything is fine in WebK version.
in php bot , send flag Unicode character as output message.
🇮 U+1F1EE 🇷 U+1F1F7
Telegram Web 1.48.2 Z, Chrome 102