The iPhone maker has just launched iOS 11.1.1 to resolve the issue caused by the bug. You can download the update by going to Settings menu on your iPhone and iPad, then click General and go to the "software update" section.
iOS 11 launched in September, along with the release of iPhone 8 and 8 Plus. As of November 6th, 52 percent of iPhones and iPads have been using iOS 11, according to developer pages from Apple.
iOS 11.1, which was launched on October 31, added a new emoji as well as a security update. However, not long afterwards, iPhone users are aware of the autocorrect bug. Interestingly some brands, such as Reebok, decided to tease Apple about this.