AttachThreadInput in the callback of SetWindowsHookExA makes Microsoft Pinyin IME buggy when typing fast.

Question

When I use AttachThreadInput in the callback of SetWindowsHookExA, and use Microsoft Pinyin IME in Chinese mode, and typing really fast, the IME turns buggy.

Minimal reproduction code (in rust, minified from rdev):

#[cfg(test)]
mod tests {
    use std::os::raw::c_int;
    use std::ptr::null_mut;
    use winapi::shared::minwindef::{LPARAM, LRESULT, WPARAM};
    use winapi::um::errhandlingapi::GetLastError;
    use winapi::um::processthreadsapi::GetCurrentThreadId;
    use winapi::um::winuser::{self, GetMessageA, SetWindowsHookExA, WH_KEYBOARD_LL};

    #[test]
    fn hook_and_block() {
        unsafe {
            if SetWindowsHookExA(WH_KEYBOARD_LL, Some(test_callback), null_mut(), 0).is_null() {
                let error = GetLastError();
                panic!("Error: {}", error);
            }
            GetMessageA(null_mut(), null_mut(), 0, 0);
        }
    }

    unsafe extern "system" fn test_callback(code: c_int, param: WPARAM, lpdata: LPARAM) -> LRESULT {
        unsafe {
            let current_window_thread_id = 14148;
            let thread_id = GetCurrentThreadId();
            if winuser::AttachThreadInput(thread_id, current_window_thread_id, 1) == 1 {
                println!("attached");

                winuser::AttachThreadInput(thread_id, current_window_thread_id, 0);
                println!("detached");
            }
            // CallNextHookEx(null_mut(), code, param, lpdata);
        }
        0
    }
}