@Moesh - I don't think this is the same issue as MC-172449. This issue is about the Deep Dark biome only generating in ancient city structures. The locate command is just used to help illustrate the issue.
Though I understand the mix-up since there seem to be a mixture of different scenarios being reported. Some comments seem to imply that it's affecting new chunks when upgrading from 1.18, while others (including me) are reporting it as affecting new caves underneath old chunks when upgrading from 1.17.
If the Deep Dark isn't actually supported in that 1.17 -> 1.19 upgrade scenario, I would understand, but I would expect it to be closed as working as designed rather than as a duplicate.
I am also seeing this problem after upgrading my 1.17.1 server to 1.19. The Deep Dark biome is not generating anywhere under the older chunks except in Ancient City structures (which do appear to be generating correctly).
@Moesh - I don't think this is the same issue as MC-172449. This issue is about the Deep Dark biome only generating in ancient city structures. The locate command is just used to help illustrate the issue.
Though I understand the mix-up since there seem to be a mixture of different scenarios being reported. Some comments seem to imply that it's affecting new chunks when upgrading from 1.18, while others (including me) are reporting it as affecting new caves underneath old chunks when upgrading from 1.17.
If the Deep Dark isn't actually supported in that 1.17 -> 1.19 upgrade scenario, I would understand, but I would expect it to be closed as working as designed rather than as a duplicate.