The bug
Within the bounds of a swamp hut, only black cats can be spawned with a cat spawn egg in creative mode. Summoning works, but you have to specify the NBT data.
This is very likely done to cause witches' cats in swamp huts to be always black, though this is not always the case due to MC-147659. This restriction, however, this is not necessary.
Expected result
You should be able to summon any cat with a spawn egg or with /summon.
Attachments
Comments 15
Might relate to MC-147659 (the opposite behavior, but only happens upon world generation).
Is working as intended, since it's a feature and an easter egg. This is similar to spawning swamp villagers in a swamp biome.
Source?
This is the third time someone says it's intentional without providing a source.
I'd like to request mods remove any further "This is intended" comments that provide no source.
Thank you for your report!
After consideration, the issue is being closed as Working as Intended.
Please note, that mechanics of the game may change between updates.
Things such as graphics, sounds, world creation, biomes, redstone, villagers, and animals may not work the same in current versions.
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Cats spawned within the bounds of a witch hut are supposed to be black, works as intended.