I Created A New World And I Applied Some Resource Pack To That World. Before 1.16 Update You Can Apply Resource Pack And Behavior Packs. Without Achievements Being Disable. When I Applied The Resource Packs To My World And Created. I Noticed In The Main Menu. It Said Achievements Cannot Be Earned In This World. I Didn't Press Activate Cheats Or Change The Game mode To Creative. It Also Didn't Ask Me To Turn Off Achievements. And it Turned off Without My Permission. And I Can't Find A Way How To Turn It Back On