Stuck on “Loading Resources” when world played

The game refuses to load worlds. When I create or play a world, they will show up with a “Loading Resources” screen. Since this happens with all worlds, it isn’t likely the game’s terrain and level.dat file creator, but perhaps the loader in general. I know nothing about how worlds are generated (both Bedrock and Java), so I can’t identify it by myself. Maybe it fails to initialize the first stages. Hopefully you’ll get it fixed; this is a game breaking bug for me. This does not happen on Java Edition 1.13.2 or Java Edition 1.14 snapshots.