I made a page builder page with a row with a button group at the very top. That buttongroup will be placed just below my menu bar (I use Helix Ultimate). On desktop you can click all the buttons of the button group nicely, but on smartphone (mobile view) you can't click those buttons. When I inspect the code in mobile view, a sort of transparent flex row (sp-column d-flex align-items-center justify-content-end, presumably from my menu bar) appears above those buttons so that they are no longer clickable. Try inserting a buttongroup or a row with buttons in a page with pagebuilder and place it at the very top. In mobile view you cannot click the buttons.