The bug, discovered last week, allows the Indian character in the Telugu language toand prevent them from opening back up. It affects any app that can display characters, including Twitter, Facebook, Instagram and Messages.
The release notes for iOS 11.2.6 say the update "fixes an issue where using certain character sequences could cause apps to crash" and "fixes an issue where some third-party apps could fail to connect to external accessories."
The problem was first spotted last week by Mobile World, which noted that it's even worse if the character pops up as a notification. In most scenarios, you have to uninstall and reinstall the app to get it to work again.
Apple said at the time it was working on a fix that would be available in the next update.
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