When creating a new world with the debug world generation settings exported, the debug world generates fine. However, the world creation menu is messed up from this. (world gen settings attached)

1. The World Type is not set to Debug and extra settings temporarily remain
Immediately after importing the debug settings, the More World Options menu remains the same and the extra settings are not removed, as well as the world type staying the same.

Upon clicking "Done" and going back to the More World Options menu, the extra settings disappear, however the world type remains at whatever it was before

2. The game mode is incorrect
Despite the world generating in spectator at this point, the gamemode that was chosen before the settings import is listed. This does not duplicate MC-211194 as it happens under different circumstances.