Htmlspecialchars, causing the text to disappear

I came across a specific string (it is not fully printable, but you can see it below), which causes the htmlspecialchars () to return a zero-length string. Can this be fixed?

$Stmnt = 'SELECT subject_name FROM bans WHERE id = 2321';
$Fetch = $Conn->query($Stmnt);
if(!$Fetch)
    die('Could not query DB');
while($Row = $Fetch->fetch_array(MYSQLI_ASSOC))
{
    $RawName = $Row['subject_name'];
    $RawLen = strlen($RawName);
    echo('RAW NAME: ['.$RawName.']'.', LENGTH: ['.$RawLen.']'.'<br />');
    for($i = 0; $i < $RawLen; $i++)
        echo('CHAR '.$i.' = ['.$RawName[$i].'] (ORD: '.ord($RawName[$i]).')<br />');

    $CleanName = htmlspecialchars($RawName, ENT_QUOTES, 'UTF-8');
    $CleanLen = strlen($CleanName);
    echo('CLEAN NAME: ['.$CleanName.']'.', LENGTH: ['.$CleanLen.']'.'<br />');
    for($i = 0; $i < $CleanLen; $i++)
        echo('CHAR '.$i.' = ['.$CleanName[$i].'] (ORD: '.ord($CleanName[$i]).')<br />');
}
$Fetch->close();
echo('DONE');

Conclusion:

RAW NAME: [━═★ Coander Fι5  ], LENGTH: [31]
CHAR 0 = [ ] (ORD: 226)
CHAR 1 = [ ] (ORD: 148)
CHAR 2 = [ ] (ORD: 129)
CHAR 3 = [ ] (ORD: 226)
CHAR 4 = [ ] (ORD: 149)
CHAR 5 = [ ] (ORD: 144)
CHAR 6 = [ ] (ORD: 226)
CHAR 7 = [ ] (ORD: 152)
CHAR 8 = [ ] (ORD: 133)
CHAR 9 = [ ] (ORD: 32)
CHAR 10 = [C] (ORD: 67)
CHAR 11 = [o] (ORD: 111)
CHAR 12 = [ ] (ORD: 208)
CHAR 13 = [ ] (ORD: 188)
CHAR 14 = [ ] (ORD: 208)
CHAR 15 = [ ] (ORD: 188)
CHAR 16 = [a] (ORD: 97)
CHAR 17 = [n] (ORD: 110)
CHAR 18 = [d] (ORD: 100)
CHAR 19 = [e] (ORD: 101)
CHAR 20 = [r] (ORD: 114)
CHAR 21 = [ ] (ORD: 32)
CHAR 22 = [F] (ORD: 70)
CHAR 23 = [ ] (ORD: 206)
CHAR 24 = [ ] (ORD: 185)
CHAR 25 = [5] (ORD: 53)
CHAR 26 = [ ] (ORD: 208)
CHAR 27 = [ ] (ORD: 189)
CHAR 28 = [ ] (ORD: 32)
CHAR 29 = [ ] (ORD: 226)
CHAR 30 = [ ] (ORD: 148)
CLEAN NAME: [], LENGTH: [0]
DONE