ЕП
Да! Именно что "скрытая". Они думали, что будет меньше вопросов у людей, а стало не меньше, а больше
List of actions to automatically convert a Basic Group to Supergroup
• Group members reach 196
• Changing group chat history visibility
• Making the group public
• Restricting a member
• Changing admin permissions or admin title
• Activate ‘Slow Mode’
• Link group to a channel
• Import group chat from other app
Note:
"The group was upgraded to a supergroup" notification won’t show on the new clients (app 5.2 iOS/Android, TDesktop 1.5.8, Native macOS 4.9)
@Telegram #feature
