Cave vines can generate inside mansions

We do not have enough information to reproduce this issue.

Please provide the following information about the world you are playing in as text. Attaching a screenshot showing them is not enough.

• World Type:

  • "Default" if you have not chosen one when creating the world.

  • For "Superflat": Additionally provide the generation preset.

  • For "Buffet": Additionally provide the generator type and biome you have selected.

• Additional generation settings (in case you changed them): E.g. "Generate Structures", "Bonus Chest", ...

• Seed: Can be obtained by using the /seed command and clicking on the message in chat

• Coordinates: Can be copied to clipboard by pressing F3 + C

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It was Default world type with Generate Structures on. Cheats are on too.

External terrain somewhat comes over the mansion and as it is a lush cave biome produces glow berries inside the mansion.

World See is -852410302214429493; coords: 363 81 -3081

I can also confirm this beavhor.

intended as glow berries generate everywhere