In iOS 26, keyboardLayoutGuide does not provide the correct constraint when using third-party input method. A demo’s source code is attached to FB18594298 to illustrate the issue. The setup includes: An inputAccessoryView above keyboard An input box anchored to the top of the inputAccessoryView using the following constraint: [self.view.keyboardLayoutGuide.topAnchor constraintEqualToAnchor:self.inputBoxContainerView.bottomAnchor] Expected Behavior: Before iOS 26, when keyboard toggled by clicking the input box, the input box should move above the inputAccessoryView. Actual Behavior: However, on iOS 26, when switching to a third-party IME (e.g. 百度输入法baidu，搜狗输入法sogou，微信输入法wechat), then click the input box, the input box is above the keyboard instead of the inputAccessoryView, and is covered by the inputAccessoryView.