Add top spacing in menu when scrolling up from bottom
It happens on my website, but in order not to waste time with data and so that you can verify it faster and more easily, it also happens, for example, in your "itservice6" demo (https://themes.muffingroup.com/be/itservice6/) .
When entering the page there is no problem with the menu, but if you scroll down, reload, and come up all the way again, then for some reason a top space is added above the menu.
It also occurs in:
Not in all but in almost all. And on my website that happens, and it really looks very bad.