NUMERIC values are corrupted in results

gistfile1.txt

import adbc_driver_postgresql.dbapi

_USERNAME = "..."
_PASSWORD = "..."
_DATABASE = "..."

# tried values from 0 to 15. summary:
#
# 0 - 4: ok
# 5 - corrupt
# 6 - ok
# 7 - ok
# 8 - ok
# 9 - corrupt
# 10 - corrupt
# 11 - ok
# 12 - ok
# 13 - corrupt
# 14 - corrupt
# 15 - corrupt
_DECIMAL = 5

_INIT = [
    "DROP TABLE numeric_test;",
    f"CREATE TABLE numeric_test (col numeric(16, {_DECIMAL}));",
    """INSERT INTO numeric_test VALUES 
        (0.0), 
        (1.0), 
        (1.01), 
        (1.012), 
        (1.0123), 
        (1.01234), 
        (1.012345), 
        (1.0123456), 
        (1.01234567), 
        (1.012345678), 
        (1.0123456789), 
        (1.0123456789);"""
    ]

print(f"adbc_driver_postgresql {adbc_driver_postgresql.__version__}")

with adbc_driver_postgresql.dbapi.connect(f"postgresql://{_USERNAME}:{_PASSWORD}@localhost:5432/{_DATABASE}") as conn:
    with conn.cursor() as c:
        # PostgreSQL 16.1 on x86_64-redhat-linux-gnu, compiled by gcc (GCC) 13.2.1 20231011 (Red Hat 13.2.1-4), 64-bit
        c.execute("SELECT version();")
        print(c.fetchone()[0])

        for stmt in _INIT:
            c.execute(stmt)

    with conn.cursor() as c:
        c.execute("SELECT * FROM numeric_test;")
        results = c.fetch_arrow_table()
        col = results.column(0)

        for i in range(results.num_rows):
            try:
                print(f"row {i:03}: |{col[i]}|")
            except UnicodeError:
                print(f"Unicode encode error for row {i}")