iOS 11 Predictive Text Bug Automatically Changes 'I' to 'A[?]' for Some Users

A growing number of iOS 11 users have been encountering a strange predictive text bug over the course of the last few days, with the problem outlined on the MacRumors forums.It seems some users are seeing "A[?]" as the first recommended predictive text word when using the iOS keyboard, and whenever "I" is typed, it autocorrects to A[?].
It's not clear what's causing the bug, but a fair number of MacRumors readers and Twitter users seem to be experiencing the problem. Not everyone is affected, th