Hey there, thank you for the report!
As you have pointed out, the search-menu-results-top plugin outlet was not positioned at the top of results as expected.
Additionally, we have recently upgraded the search menu and its internals to rely on Glimmer. You are not seeing @outletArgs.searchTerm as it was not included (unintentionally) in the search-menu-results-top plugin outlet, attached to the glimmer search menu.
This will be fixed by
see plugin outlet location as well as search term attached