diff --git a/src/renderer/src/components/native-chat/NativeChatComposerField.tsx b/src/renderer/src/components/native-chat/NativeChatComposerField.tsx
index 2e3f2834e63..840bbad1669 100644
--- a/src/renderer/src/components/native-chat/NativeChatComposerField.tsx
+++ b/src/renderer/src/components/native-chat/NativeChatComposerField.tsx
@@ -182,7 +182,7 @@ export function NativeChatComposerField({
               onChange={(e) => onDraftChange(e.target.value, e.currentTarget)}
               onKeyDown={(event) => {
                 const ownsCompositionEnter =
-                  event.nativeEvent.isComposing &&
+                  (event.nativeEvent.isComposing || compositionActiveRef.current) &&
                   ((event.key === 'Enter' && (event.keyCode === 13 || event.keyCode === 229)) ||
                     (event.key === 'Process' && event.keyCode === 229))
                 if (ownsCompositionEnter) {
diff --git a/src/renderer/src/components/native-chat/native-chat-composer-autogrow.test.tsx b/src/renderer/src/components/native-chat/native-chat-composer-autogrow.test.tsx
index 02d09331dc3..e03b967692c 100644
--- a/src/renderer/src/components/native-chat/native-chat-composer-autogrow.test.tsx
+++ b/src/renderer/src/components/native-chat/native-chat-composer-autogrow.test.tsx
@@ -192,6 +192,28 @@ describe('native chat composer composition ownership', () => {
     expect(onKeyDown).toHaveBeenCalledOnce()
   })
 
+  it('retains an active composition when the Process event omits its composing flag', () => {
+    const onKeyDown = vi.fn()
+    render(composerField('가', { onKeyDown }))
+    const textarea = screen.getByRole('textbox') as HTMLTextAreaElement
+    fireEvent.compositionStart(textarea)
+    fireEvent.keyDown(textarea, {
+      key: 'Process',
+      keyCode: 229,
+      isComposing: false
+    })
+    fireEvent.compositionEnd(textarea, { data: '가' })
+
+    const redispatchResult = fireEvent.keyDown(textarea, {
+      key: 'Enter',
+      keyCode: 13,
+      isComposing: false
+    })
+
+    expect(redispatchResult).toBe(false)
+    expect(onKeyDown).not.toHaveBeenCalled()
+  })
+
   it('retains the macOS marked Enter/229 gesture through its unmarked redispatch', () => {
     const onKeyDown = vi.fn()
     let clearPending: FrameRequestCallback | undefined