Unsure if this is a bug, but is it intended that the Ultimate Craft / Avenger has no services required for researching it? New Fighter Craft and Grav Shield, its immediate prerequisites, require improved labs, so it seems odd that you can assign the final research for the Ultimate Craft to some research backwater.
It doesn't actually matter much (because ofc you need those labs for the prerequisite) but it feels odd - you'd expect it to require at least an Improved Lab like its immediate prerequisites.
Or is the idea that it's basically just combining more intricate tech developed elsewhere and is therefore more a feat of engineering than a feat of science?