Delta Lake broken when partition column order does not match table column order

[dain]

DROP TABLE IF EXISTS test_delta; 

CREATE TABLE test_delta (
   id integer,
   first varchar,
   second varchar
)
WITH (
   type = 'DELTA',
   partitioned_by = ARRAY['second', 'first'] -- NOTE: different than table column order
);

INSERT INTO test_delta (first, id, second)
VALUES ('A', 1, 'B');

-- also broken when inserting with default column order
INSERT INTO test_delta 
VALUES (2, 'X', 'Y');

select * from test_delta;

Here is the output. Notice first and second are swapped:

id	first	second
1	B	A
2	Y	X

Some example test queries

-- test cases
SELECT if (first <> 'A', fail('delta partitioning is broken')) FROM test_delta WHERE id = 1;
SELECT if (first <> 'X', fail('delta partitioning is broken')) FROM test_delta WHERE id = 2;