Omit “” in Database Text Storage [duplicate]

I have a message system. When storing a message in the database, it should store normally and display normally. For example, “What’s Up?” -> “What’s Up?”. However, it stores and displays as “What’s Up” with a backlash after the “t”. How can I fix this so that the message is sent and displayed normally, as it is supposed to.

Here’s my code currently:

<div id="chatSection" class="consult-window-section" style="display: none;">
<?php
// Load chat messages
$chatQuery = "SELECT * FROM consultation_chat
              WHERE consultation_id = $consultation_id
              ORDER BY sent_at ASC";
$chatResult = mysqli_query($connection, $chatQuery);
?>

<div class="chat-box">
  <div class="chat-messages" id="chatMessages">
    <?php while ($chat = mysqli_fetch_assoc($chatResult)): ?>
      <div class="chat-message <?= $chat['sender_id'] == $_SESSION['id'] ? 'sent' : 'received' ?>">
        <p><?= htmlspecialchars(stripslashes($chat['message']), ENT_QUOTES) ?></p>
        <span class="timestamp"><?= date("H:i", strtotime($chat['sent_at'])) ?></span>
      </div>
    <?php endwhile; ?>
  </div>

  <form method="POST" class="chat-form" id="chatForm">
    <input type="hidden" name="consultation_id" value="<?= $consultation_id ?>">
    <input type="hidden" name="sender_id" value="<?= $_SESSION['id'] ?>">
    <input type="hidden" name="receiver_id" value="<?= $consultant['id'] ?>">
    <input type="text" name="message" placeholder="Type your message..." required autocomplete="off">
    <button type="submit">Send</button>
  </form>
</div>

if (isset($_GET['fetchMessages']) && isset($_GET['consultation_id'])) {
  $consultation_id = intval($_GET['consultation_id']);
  $user_id = $_SESSION['id'];

  $query = "SELECT * FROM consultation_chat WHERE consultation_id = ? ORDER BY sent_at ASC";
  $stmt = $connection->prepare($query);
  $stmt->bind_param("i", $consultation_id);
  $stmt->execute();
  $result = $stmt->get_result();

  while ($msg = $result->fetch_assoc()) {
    $isSender = $msg['sender_id'] === $user_id;
    $align = $isSender ? 'right' : 'left';
    $color = $isSender ? '#d2bca9' : '#e3d2c3';
    echo "<div style='text-align: $align; margin: 10px 0;'>
            <div style='display: inline-block; background: $color; padding: 10px 15px; border-radius: 10px; max-width: 70%;'>
              <p style='margin: 0; font-size: 16px; font-family: Lora;'>{$msg['message']}</p>
              <small style='font-size: 12px; color: gray;'>{$msg['sent_at']}</small>
            </div>
          </div>";
  }
  exit;
}

// Handle new message POST
if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_POST['message'])) {
  $msg = mysqli_real_escape_string($connection, $_POST['message']);
  $sender_id = intval($_POST['sender_id']);
  $receiver_id = intval($_POST['receiver_id']);
  $consult_id = intval($_POST['consultation_id']);

  $stmt = $connection->prepare("INSERT INTO consultation_chat (consultation_id, sender_id, receiver_id, message) VALUES (?, ?, ?, ?)");
  $stmt->bind_param("iiis", $consult_id, $sender_id, $receiver_id, $msg);
  $stmt->execute();

  header("Location: user_window.php?consultation_id=$consult_id&section=chat");
}