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egui disallows IME when a text field loses focus, for example when the user clicks the page while composing. winit 0.30.13 then clears its own marked text but never tells the input method, which keeps the composition and continues it once IME is allowed again. Checked with the real input methods on macOS 14.7.1: Korean 하, IME off and on, then r k gave 학, then 하 and 가 (하 committed a second time if the app already kept it); Japanese か, IME off and on, then s a gave 傘. vendor/winit now calls NSTextInputContext::discardMarkedText when IME is disallowed with marked text present, before its existing reset, as rust-windowing/winit#4745 does on winit master. With the patch the same sequences give 가 and さ. AppKit may call unmarkText from discardMarkedText while IME is still enabled, so its Preedit("") comes before Disabled; the RefCell borrow in the check ends before the call. Everything else in the scratch app's traces (ABC, Japanese, Cangjie, Korean) is unchanged. A test fails if a re-vendored winit loses the patch. Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com> Co-authored-by: Brandon Thomas <echelon@gmail.com>