In case anyone else is looking for a selector to add because their breadcrumbs disappear in Vector (2022), I found this to work pretty well:
$wgJSBreadCrumbsCSSSelectorHorizontal = [ 'vector-2022' => '#mw-content-subtitle' ];
In case anyone else is looking for a selector to add because their breadcrumbs disappear in Vector (2022), I found this to work pretty well:
$wgJSBreadCrumbsCSSSelectorHorizontal = [ 'vector-2022' => '#mw-content-subtitle' ];