Hi there,
I discoverd a problem on Helix Ultimate (new installation).
I tried to add a custom header (via layout builder). On the positions I only can find "menu", the position "logo" or "top#" are not present in the dropdown.
Also I tried to change the footer from 2 colums to a single column (12). After changing this the footer postions are also disappeared (the layout builder shows "none") and when I try to select "footer#" they are also not selectable in the dropdown (see https://prnt.sc/21iug4o).