Safari half sticky element problem
Safari has weird bug about sticky elements in flexboxes, those sticky elements get scrolled after a while - more like in the half of the scrollbar, which is pretty confusing.
Problem:
Open the link in the Safari, scroll the mid (yellow) section and notice that green bar (sticky element) gets also scrolled after a while.
The problem is that in Safari sticky element cannot be flex item (direct child of a flex) whenever the sticky element is not the only child of a flex and the neighbour of sticky element has specified flex-shrink or flex-basis .
Solution:
Simply add one additionalwrapper for sticky element and the problem should be solved :)