We all know very well about this but we want that the app should be able to be locked instantly after getting backed or minimized without tapping on the lock icon.As given the timer of passcode lock should be improved an option "Instant " should be added to the timer.This will work like a instant lock. I hope this is the suggestion of many telegram users , so telegram should apply this instantly. Thanks...
Status changed to Fixed
This issue indicates it’s been fixed, but the suggestion has not been implemented on iOS.