Hi,
there might be a bug in the template. If you use a small browser window or a small tablet the menu does not fit and appears in the submenu aerea. Mybe it would be better, if a smaller mobile-logo will be used in this case but the template uses the desktop logo.
There is no bug!
1.) You can use a small logo too > Modul Position > logo-small
2.) Reduce the space between the menu item > Customizer > Advanced > Navbar > Padding
3.) You can setup the breakpoints in Customizer too