selection.addRange works correctly in Chrome

현상

In Chrome, when using selection.addRange() to set cursor position in a contenteditable element with nested elements, the selection is correctly positioned at the intended location.

재현 예시

1. Contenteditable element contains markers (<span> elements).
2. Click button to move cursor before Marker 2.

관찰된 동작

• Correct behavior: Selection is positioned before Marker 2 as intended
• No jumping: Selection stays within intended container
• Works correctly: Chrome handles nested elements properly

참고사항

This is a control case demonstrating that the issue is Safari-specific and does not affect Chrome.