IME composition shows Pinyin in table cells on iOS Safari

현상

In iOS Safari, when typing Chinese IME text in table cells (<td>), pressing Space to confirm composition causes both raw Pinyin buffer and confirmed Chinese characters to appear together.

재현 예시

1. Tap on a table cell (<td> element) to focus.
2. Activate Chinese IME (iOS Chinese keyboard).
3. Type Pinyin “nihao” (for Chinese characters “你好”).
4. Press Space to confirm composition.

관찰된 동작

• Duplicate text: Pinyin “nihao” and Chinese “你好” appear together → “nihao 你好”
• Table cells only: Behavior does not occur in paragraph elements (<p>, <div>)
• iOS Safari specific: Similar to desktop Safari but on mobile devices
• Works in Chrome/Firefox: Other browsers do not exhibit this bug

예상 동작

• Pinyin buffer (“nihao”) should NOT be visible
• Only confirmed Chinese characters (“你好”) should appear

참고사항 및 가능한 해결 방향

• Use div instead of td: Replace <td> with <div> for editable content when possible
• Force DOM cleanup: Remove Pinyin text after composition completes
• Avoid direct editing in table cells: Use modal or overlay for table cell editing

코드 예시

const cell = document.querySelector('td[contenteditable]');
let isComposing = false;

cell.addEventListener('compositionstart', () => {
  isComposing = true;
});

cell.addEventListener('compositionend', () => {
  isComposing = false;
  setTimeout(() => {
    const text = cell.textContent;
    const cleaned = text.replace(/[a-z]+/g, '');
    cell.textContent = cleaned;
  }, 0);
});

cell.addEventListener('keydown', (e) => {
  if (isComposing && e.key === ' ') {
    e.preventDefault();
    // Let IME complete naturally
  }
});