I think it may be that the clipboard hijacking or malware has tampered with the address content on your or your friend's device. In addition, it may be a bug in the Telegram client that causes the display error. Another possibility is that an error occurred during the copy and paste process, causing the address to be displayed incorrectly.

You need to check whether the device has malware or whether there is a cache problem in the Telegram app. It is recommended that you and your friend reinstall Telegram, update to the latest version, and clear the cache.