When scrolling the pinned element(<section class="fancy">), it changes the position of its sibling element's(<section id="B" class="plain">) scrolltrigger start value which affects the timing of it's trigger. So, is their any way to preserve sibling element's(<section id="B" class="plain">) scrolltrigger start value on fixed point which will not be affected by scrolling on pinned element(<section class="fancy">).