Microsoft IME basically a keylogger?

Microsoft IME remembers everything you type to give you suggestions and the history can’t be deleted (https://answers.microsoft.com/en-us/windows/forum/windows_10-security/how-do-i-delete-my-input-history-in-cangjie/6ba1b346-42c1-4389-951f-601b93f711f7).

Any suggestions to delete history appreciated.

Found here