This is part of the sticky header, it currently has a bug or two.
1. The scroll goes crazy and the page cannot be scrolled: In Header Height you set different heights for desktop tablet and mobile, for example a header of 80px for desktops and 60px for tablets or mobiles, after compiling to CSS visit the front end with Sticky Header activated if the browser is resized, scrolls the page and you resize the page again it goes crazy and cannot be scrolled.
2. Header Sticky blinking: If in Hedaer Height we have set the same height for desktop, tablet and mobile it no longer goes crazy, but rotating the screen or resizing the screen and then moving through the page, the header sticky is constantly flicker.
The 2 mentioned cases are produced by handleStickiness() running in resize in main.js, this needs to be improved.
Thank you.