locomotive scroll element disappear bug

해결방법

[data-scroll-container],
[data-scroll-section] {
  perspective: 1px;
}

도움받은 곳 링크

https://github.com/locomotivemtl/locomotive-scroll/issues/361

The most reliable way seems to add perspective: 1px; to either the data-scroll-container element or data-scroll-section elements. Adding it to data-scroll-section elements makes it so fixed elements can still function correctly inside the main scroll container.