Fraction cannot display in DOMPDF 0.8.xxx

I have problem when parse Fraction to DOMPDF.
I’ve changed the font-family to DejaVu Sans, Roboto, and Helvetica Neue, Helvetica but it doesn’t affect the resulting PDF

By DB:
HTML Entities => enter image description here => ⅐

Result PDF:

  • Use font-family ‘times’ => ‘?’
  • Use font-family ‘dejavu sans’ => (whitespace)
  • Use font-family ‘roboto’ => (square empty)

Help me, guys!

I change PdfGenerator.php, edit file HTML for generate to DOMPDF, Have used mbstring_encryption_encode, utf8_decode