I wouldn't really call this a bug, ominous vaults are not their own block, they are just a type of vault block, it's like trying to obtain a waterlogged stair
Just noticed MC-269985, this is a duplicate
Bug has not been fixed, still works as of 24w13a
I wouldn't really call this a bug, ominous vaults are not their own block, they are just a type of vault block, it's like trying to obtain a waterlogged stair