1.16.2 pre-1 only changes the datapack file structure according to the changelog . However the game still crashes after creating custom world using "import settings" with the provided json format (i.e. defining custom dimension_type as an list object). This should be a bug.
Confirm for Traditional Chinese.
The game log shows the following message while in this situation:
[media]
Crash still occurs in 1.16.2 pre-2
Update: This bug occurs only when "import settings" is used. The game goes fine if dimension, dimension_type and biome are fully defined in datapacks.
Update: The issue is fixed in 1.16.2 pre-3