The bug was on the keyboard where it auto corrected the letter ‘i’ to ‘A[?]’. Example if you typed ‘iPad’ on the keyboard, it will change to ‘A[?]Pad’. Now, that is totally annoying to the user and to anyone who receives such a text.
Fortunately, Apple has released an update today to solve this issue. This update is not a feature update. It only solves this bug and another case where ‘Hey Siri’ command stopped working.