From the news thread.
Greetings Commanders,
Today we will be applying a server-side fix so that shipyards will correctly activate in all instances following the changes made in Trailblazers update 3.1.
Please note that these changes will take up to 24 hours to be visible in game.
This is part of a larger update which will be applied next week, which aims to correct activation behaviour for all station services.
Patch notes and full detail on how services can be activated will be provided in advance to enable Commanders to plan accordingly.