PDO_DBLIB: Fetching from statements sharing a conection results in wrong values being returned

Description

When using pdo_dblib, making 2 queries at the same time using the same conection results in corrupt statements
The keys are correct, but the results are from the last query
It's as if both statements are somehow sharing the same cursor under the hood

The following code:

<?php
$user = "REDACTED";
$pass = "REDACTED";
$host = "REDACTED";
$db   = "REDACTED";

$con = new \PDO("dblib:host=$host;dbname=$db;version=7.3;charset=UTF-8",$user,$pass,array(
    PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC
));

$sta = $con->query("SELECT *
FROM (
    VALUES ('A0'),
           ('A1'),
           ('A2')
) AS MyTable(A)");

$stb = $con->query("SELECT *
FROM (
    VALUES ('B0'),
           ('B1'),
           ('B2')
) AS MyTable(B)");

var_export($sta->fetch()); echo "\n";
var_export($stb->fetch()); echo "\n";

var_export($sta->fetch()); echo "\n";
var_export($stb->fetch()); echo "\n";

Resulted in this output:

array (
  'A' => 'B0',
)
array (
  'B' => 'B1',
)
array (
  'A' => 'B2',
)
false

But I expected this output instead:

array (
  'A' => 'A0',
)
array (
  'B' => 'B0',
)
array (
  'A' => 'A1',
)
array (
  'B' => 'B1',
)

PHP Version

PHP 8.2.7

Operating System

Ubuntu 23.04

Inizia con la gestione delle istruzioni di pdo_dblib esercitata dalla riproduzione PHP fornita, concentrandoti sul comportamento di fetch() per due istruzioni che condividono una connessione. Riproduci le query intercalate e verifica che ciascuna istruzione restituisca le proprie righe A o B nell’ordine previsto.