When resetting a realm world, the World Type will display the raw "generator.default" lanuage string instead of "Default"
MC-252508
Realms worldgen type missing language string
Resolved
Fixed
3
I can confirm this behavior. This can be seen with all realms world type settings and isn't just exclusive to generator.default. All of the affected listed below are displayed as raw translation strings:
generator.default
generator.flat
generator.large_biomes
generator.amplified