flutter-quill Text entered with Japanese IME on macOS duplicates phrases beyond the first when confirmed

Is there an existing issue for this?

[X] I have searched the existing issues

Flutter Quill version

10.5.5

Steps to reproduce

Enter a sentence with two or more phrases using Japanese IME. Example: きょうはいえにかえります This sentence consists of three phrases, recognized during IME conversion as: きょうはいえにかえります
Press the space key to convert using IME, then press Enter to confirm.

Expected results

The text entered in step 1 is converted and correctly inputted into the editor.

Example: 今日は家に帰ります Where 今日は is the first phrase, 家に is the second phrase, 帰ります is the third phrase.

Actual results

The text starting from the second phrase is duplicated upon confirmation.

Example: 今日は家に帰ります家に帰ります The second and third phrases are duplicated: The input becomes 1st phrase + 2nd phrase + 3rd phrase + 2nd phrase + 3rd phrase.

Code sample

No response

Additional Context

There are several types of Japanese IME, but the result was the same with any IME used.

Screencast:

https://github.com/user-attachments/assets/decffbd9-f87d-4727-8c94-4f63c51cbc50

Flutter Doctor:

Doctor summary (to see all details, run flutter doctor -v): [✓] Flutter (Channel stable, 3.24.1, on macOS 14.5 23F79 darwin-arm64, locale ja-JP) [✓] Android toolchain - develop for Android devices (Android SDK version 34.0.0) [✓] Xcode - develop for iOS and macOS (Xcode 15.3) [✓] Chrome - develop for the web [✓] Android Studio (version 2023.1) [✓] VS Code (version 1.92.2) [✓] Connected device (6 available) ! Error: Browsing on the local area network for ToshitakaさんのApple Watch. Ensure the device is unlocked and discoverable via Bluetooth. (code -27) [✓] Network resources

• No issues found!