I'm trying to learn interSectionObserver and ScrollIntoView in javascript but ScrollIntoView works odd

targetToScroll.scrollIntoView(); // works
//code below does not work on chrome v99.0.4844.74 and does not work on edge 99.0.1150.39, but works on firefox v98.0.1
// targetToScroll.scrollIntoView({behavior: 'smooth'});

for online testing checkout my pen My pen javascript file line 11 to 14