Hi Binyamin,
this is pretty much the case of Accessibility inspector not showing correct aria role.
Hi, I realize that this is unexpected landmar roles that are exposed in Firefox via “xml-roles” attribute rather than a role property (you can see that in the inspector too, if you expand the attributes property you’ll see that xml-roles is set to banner). Screen readers will handle this case correctly.
In any case, seeing how this is not the first time it’s brought up, I thin we can improve things (in terms of visibility of the xml-roles) , so I opened https://bugzilla.mozilla.org/show_bug.cgi?id=1677547