I added this code to the css, so its basically solved, even tho it might be good to keep this in mind for a further bug update or a possibility to change in the system by itself.
.sitetitle {
z-index: 1000;
}
.laynav.desktop-nav.show-submenu-on-hover.submenu-type-vertical.laynav-position-top-right.arrangement-horizontal.position-top.is-fixed.primary {
z-index: 1000;
}